Queen Elizabeth II Through The Years

Picture dated from the year 1933 of Princess Margaret (L), the younger sister of future Britain's Queen Elizabeth II (R). Margaret was born at Glamis Castle 21 August 1930. She was educated at home with her sister, and her first major state event was the coronation of her parents King George VI and Queen Elizabeth I (later Queen Mother). (Photo credit AFP/Getty Images)

Queen Elizabeth II In 1945

The Queen Elizabeth (2nd-L, future Queen Mother), her daughter Princess Elizabeth (4th-L, future Queen Elizabeth II), Queen Mary (C) , Princess Margaret (5th-L) and the King George VI (R), pose at the balcony of the Buckingham Palace in December 1945. (Photo credit should read AFP/Getty Images)

Queen Elizabeth In 1947

Queen Elizabeth II (in coach) and her husband Prince Philip, Duke of Edinburgh are cheered by the crowd after their wedding ceremony, on November 20, 1947, on their road to Buckingham Palace, London. November 20, 1947| Credit: AFP

Queen Elizabeth II In 1948

Princess Margaret (1930- 2002, left) and her sister, Princess Elizabeth (later Queen Elizabeth II) leaving Grosvenor Square, London, after the unveiling of the memorial to American President Franklin Delano Roosevelt, 10th April 1948. (Photo by Fox Photos/PNA//Hulton Archive/Getty Images)

Queen ELizabeth II In 1948

Left to right: King George VI (1895 - 1952), Princess Elizabeth (later Queen Elizabeth II), Queen Elizabeth (later Queen Mother, 1900 - 2002) and Bernard Fitzalan-Howard, 16th Duke of Norfolk (1908 - 1945) at the Oaks Stakes, Epsom Downs Racecourse, Surrey, 3rd June 1948. (Photo by Fox Photos/Hulton Archive/Getty Images)

Queen Elizabeth II In 1951

Undated picture showing the Royal British couple, Queen Elizabeth II, and her husband Philip, Duke of Edinburgh, with their two children, Charles, Prince of Wales (L) and Princess Anne (R), circa 1951. (Photo credit should read OFF/AFP/Getty Images)

Queen Elizabeth II In 1951

Undated picture showing the Royal British couple, Queen Elizabeth II, and her husband Philip, Duke of Edinburgh, with their two children, Charles, Prince of Wales (L) and Princess Anne (R), circa 1951. (Photo credit should read OFF/AFP/Getty Images)

Queen Elizabeth II In 1952

Queen Elizabeth II poses with the royal sceptre 02 June 1953 after being crowned solemnly at Westminter Abbey in London. Elizabeth was proclaimed Queen in 1952 at age 25. (Photo credit STF/AFP/Getty Images)

Queen Elizabeth II In 1952

Undated picture of the Queen Elizabeth II, the Prince Philip and their two children Prince Charles of England and Princess Ann of England posing in Balmoral. (Photo credit should read -/AFP/GettyImages)

Queen Elizabeth II In 1953

Queen Elizabeth II accompanied by Prince Philip waves to the crowd, 02 June 1953 after being crowned solemnly at Westminter Abbey in London. Elizabeth married the Duke of Edinburgh on the 20th of November 1947 and was proclaimed Queen in 1952 at age 25. Her coronation was the first worldwide televised event. (Photo credit STF/AFP/Getty Images)

Queen Elizabeth II In 1953

Undated official portrait of the Queen Elizabeth II, taken in an unknown location. (Photo credit should read /AFP/Getty Images)

Queen Elizabeth II In 1953

Queen Elizabeth II is seen through the window of the royal carriage, 02 June 1953 after being crowned solemnly at Westminter Abbey in London. Elizabeth was proclaimed Queen in 1952 at age 25. (Photo credit STF/AFP/Getty Images)

Queen Elizabeth In 1956

Queen Elizabeth II inspects men of the newly-renamed Queen's Own Nigeria Regiment, Royal West African Frontier Force, at Kaduna Airport, Nigeria, during her Commonwealth Tour, 2nd February 1956. February 02, 1956| Credit: Fox Photos

Queen Elizabeth II In 1954

Queen Elizabeth II on the balcony of Government House, Melbourne, during her tour of Australia, March 1954. March 01, 1954| Credit: Fox Photos

Queen Elizabeth II In 1954

Queen Elizabeth II dancing with Air Marshal Sir John Baldwin (1892 - 1975), colonel of the 8th Hussars, at a ball held at the Hyde Park Hotel, London, 26th November 1954. The ball celebrates the centenary of the Battle of Balaclava. (Photo by Dennis Oulds/PNA/Central Press/Hulton Archive/Getty Images)

Queen Elizabeth II In 1958

Queen Elizabeth II watching Prince Philip, Duke of Edinburgh during a cricket match at Highclere Castle, Highclere, Hampshire, 3rd August 1958. (Photo by Victor Blackman/Daily Express/Hulton Archive/Getty Images)

Queen Elizabeth II In 1958

Queen Elizabeth II attends a polo match at Windsor, UK, 4th August 1958. (Photo by Bob Haswell/Express/Getty Images)

Queen Elizabeth II In 1958

Queen Elizabeth II attends a polo match at Windsor, UK, 4th August 1958. (Photo by Bob Haswell/Express/Getty Images)

Queen Elizabeth II In 1960

An undated picture shows Britain's Queen Elizabeth II (R) standing next to her daughter Princess Anne. (Photo credit should read STF/AFP/Getty Images)

Queen Elizabeth II In 1961

Portrait taken on October 31, 1962 shows Britain's Queen Elisabeth II travelling by carriage from Buckingham Palace to Westminster. (Photo credit STRINGER/AFP/Getty Images)

Queen Elizabeth II In 1961

Britain's Queen Elizabeth II and Prince Philip, Duke of Edinburgh, laugh on December 4, 1961 as they watch the Susu dancers during their visit at the Northern Province of Sierra Leone. (Photo credit STRINGER/AFP/Getty Images)

Queen Elizabeth II In 1961

Britain's Queen Elizabeth II and Prince Philip, Duke of Edinburgh, watch on December 4, 1961 the Susu dancers as they visit the Northern Province of Sierra Leone. (Photo credit STRINGER/AFP/Getty Images)

Queen Elizabeth II In 1961

Queen Elizabeth II and Prince Philip leave Manchester by train, 24th May 1961. (Photo by Fox Photos/Hulton Archive/Getty Images)

Queen Elizabeth II In 1964

Queen Elizabeth II attends a performance at RADA (the Royal Academy of Dramatic Art), to celebrate the drama school's Diamond Jubilee (60th anniversary), London, UK, November 1964. (Photo by Terry Disney/Express/Getty Images)

Queen Elizabeth II And Bob Hope

Queen Elizabeth II shaking hands with Bob Hope, with Mireille Mathieu, Ken Dodd and Harry Secombe in the background, at the Royal Variety Performance, London Palladium, November 13th 1967. (Photo by Central Press/Hulton Archive/Getty Images)

Queen Elizabeth II In 1969

Prince Philip, Duke of Edinburgh and Queen Elizabeth II wave to crowds during the Garter Procession at Windsor Castle, 1969. (Photo by Victor Blackman/Daily Express/Hulton Archive/Getty Images)

Queen Elizabeth II In 1969

Britain's Queen Elizabeth II (L) shakes hands with French singer Mireille Mathieu in 1969 in London after the French artist performance. (Photo credit should read -/AFP/Getty Images)

Queen Elizabeth II In New Zealand

Queen Elizabeth II during a visit to New Zealand, March 1970. (Photo by William Lovelace/Daily Express/Getty Images)

Queen Elizabeth II In 1972

Queen Elizabeth II during a state visit to France, May 1972. May 01, 1972| Credit: Michael Stroud

Queen Elizabeth II In 1973

Queen Elizabeth II on a tour of the Chelsea Flower Show, London, 22nd May 1973. (Photo by John Downing/Daily Express/Hulton Archive/Getty Images)

Queen Elizabeth II In 1976

The Queen Elizabeth II, dressed in royal regalia, posed for this special Jubilee picture in the Throne Room of Buckingham Palace, after she had delivered the traditional Queen's speech at the 1976 official State Opening of Parliament. She wears the Imperial State Crown and the Robe of State, also known as the Parliamentary Robe. Around her neck is the Jubilee Necklace of diamonds and pearls and the chain is the Collar of the Order of the Garter, Britain's premier order of Knighthood. Her gown is of white silk with bands of gold and silver embroidery. (Photo credit /AFP/Getty Images)

Queen Elizabeth II In 1976

The Queen Elizabeth II poses for her 50th birthday, April 1976 in Windsor. (Photo credit should read /AFP/Getty Images)

Pope John Paul II, Queen Elizabeth II And Prince Philip

Pope John Paul II with Queen Elizabeth II and the Duke of Edinburgh (centre) during the Royal Tour of Italy, 1980. (Photo by Fox Photos/Hulton Archive/Getty Images)

Queen Elizabeth II In 1981

Charles, Prince of Wales, bows and his bride, Lady Diana, curtsies to Queen Elizabeth as they leave St Paul's Cathedral, on July 29, 1981, after their marriage. AFP PHOTO (Photo credit should read ARCHIVE/AFP/Getty Images)

Queen Elizabeth II With George Bush In 1991

This file photo shoes Great Britain's Queen Elizabeth II (L) and former US President George Bush (R) watching as the 3rd US Infantry (The Old Guard) passes in review during a welcoming ceremony 14 May 1991 at the White House, in Washington,DC. The queen and her husband, Prince Philip are scheduled to spend thee days in Washington. (Photo credit J. DAVID AKE/AFP/Getty Images)

Queen Elizabeth II In 1993

June 1993: A portrait of Her Majesty the Queen, Elizabeth II in an open carriage during Royal Ascot week at Ascot racecourse in Ascot, England. (Photo: Chris Cole/Allsport)

Queen Elizabeth II In 1994

March 19, 1994: Her Majesty the Queen waves to the supporters after opening the new stand during the Five Nations Championship match between England and Wales at Twickenham in London. England won the match 15-8. (Photo: David Cannon/Allsport)

Queen Elizabeth II With Bill Clinton

US President Bill Clinton and Britain's Queen Elizabeth II smile for the cameras during the group photo session at the Guildhall 04 June 1994 prior to a celebratory banquet for the 50th anniversary of the D-Day invasion of Normandy. (Photo credit GERRY PENNY/AFP/Getty Images)

Queen Elizabeth II In 1995 With Nelson Mandela

South African President Nelson Mandela greets Queen Elizabeth II of Britain upon her official arrival at Cape Town's Waterfront 20 March 1995. The Queen is on celebratory week-long state visit to South Africa. (Photo credit WALTER DHLADHLA/AFP/Getty Images)

Queen Elizabeth II In 1997

The Queen makes her speech in the House of Lords at the State Opening of Parliament 14 May 1997. (Photo credit AFP/Getty Images)

Queen Elizabeth II In 1997

Wearing her trademark style of hat, Queen Elizabeth II smiles as she visits Bowring Park in St John's, Newfoundland, 25 June 1997. The Queen is on the third day of a 10-day official visit to Canada. (Photo credit DAVE CHAN/AFP/Getty Images)

Queen Elizabeth II In 1997

Queen Elizabeth II talks with students in the hospitality and tourism program at Canadore College during her official visit to North Bay, Ontario, Canada, 30 June. The Queen is on the eighth day of a 10-day-official visit to Canada (Photo credit ANDRE PICHETTE/AFP/Getty Images)

Queen Elizabeth II In 1998

Britain's Queen Elizabeth shares a joke with recruits on the assault course 27 March during her visit to Devon at the Royal Marines Commando Training Centre, where Prince Edward failed to complete his Marine Officer Candidate Course at the Commando Training Centre, Lympstone Devon. (Photo credit DAVID MCHUGH/AFP/Getty Images)

Queen Elizabeth II In 1998

Britain's Queen Elizabeth II makes her traditional Christmas Day broadcast, 25 December. Eds. note: Pic was taken 18 December during the shooting of the broadcast. (Photo credit FIONA HANSON/AFP/Getty Images)

Queen Elizabeth II In 1999

Queen Elizabeth II arrives for a service at the St Pauls church after a wreath laying ceremony honoring the dead of two world wars at the Cenotaph in Durban on Remembrance Sunday, 14 November 1999, the first time in 16 years that she has not led national mourning in Britain. (Photo credit ODD ANDERSEN/AFP/Getty Images)

Queen Elizabeth II In 1999

Queen Elizabeth II of England laughs as she leaves St. George's Chapel in Windsor castle after the wedding of Sophie Rhys-Jones and her son Prince Edward 19 June 1999. Buckingham Palace announced before the wedding that the the couple will be known as the Earl and Countess of Wessex. (Photo credit IAN WALDIE/AFP/Getty Images)

Queen Elizabeth II In 2000

The Queen Elizabeth II arrives for the Service of the Order of St Michael and St George at St Paul's Cathedral Friday 14 July 2000 in London. (Photo credit MICHAEL STEPHENS/AFP/Getty Images)

Queen Elizabeth II In 2000

Britain's Queen Elizabeth II addresses her speech to the House of Lords during the State Opening of Parliament 06 December 2000. The speech outlines details of what the British government hopes to achieve in the next parliamentary session. (Photo credit JOHN STILLWELL/AFP/Getty Images)

Queen Elizabeth II In 2000

The Queen enjoys a light hearted moment with the Argentinian polo team (not pictured) at the Guards Polo club in Windsor 30 July 2000. The Argentinian team won in extra time 10 goals to 9 against England. (Photo credit HUGO PHILPOTT/AFP/Getty Images)

Queen Elizabeth II With The Clintons

US President Bill Clinton (2nd L) talks with Elizabeth II (R) along with the First Lady Hillary Rodham Clinton (L) and daughter Chelsea (2nd R) at the Garden Entrance of Buckingham Palace 14 December, 2000 in London, England. The Clintons had tea with the Queen as they were wrapping up their three day trip to Ireland, North Ireland and the UK. (Photo credit PAUL RICHARDS/AFP/Getty Images)

Queen Elizabeth II In 2000

Queen Elizabeth II arrives at Westminster Abbey, London for the service of Holy Communion at the inauguration of the 7th General Synod of the Church of England, on November14 2000. (Photo credit HUGO PHILPOTT/AFP/Getty Images)

Queen Elizabeth II In 2001

Britain's Queen Elizabeth II leaves The Palace of Westminster after the State Opening of Parliament in London 20 June 2001. In the Queen's speech a "radical" agenda to reform schools, hospitals and the criminal justice system was promised. Later in the day politicians will re-assemble in the House of Commons. (Photo credit ADRIAN DENNIS/AFP/Getty Images)

Queen Elizabeth II In 2001

Queen Elizabeth II arrives aboard her carriage in the paddock for the fourth and last day of Royal Ascot horse races, 22 June 2001. (Photo credit should read GERRY PENNY/AFP/Getty Images)

Queen Elizabeth II With George W. Bush In 2001

US President George W. Bush (L) is escorted to his car at Buckingham Palace by Queen Elizabeth II 19 July 2001 in London, England, where the President and Mrs Bush had lunch with the Queen. President Bush is scheduled to spend two nights in London before going to the G8 Economic Summit in Genoa, Italy (Photo credit LUKE FRAZZA/AFP/Getty Images)

The Queen Visits New Zealand

Britains Queen Elizabeth II smiles at the crowds of well wishers lining the Waitemata Plaza walkway February 26, 2002 in Auckland, New Zealand. The Queen and her husband the Duke of Edinburgh are in New Zealand for six days before travelling to Australia on February 27. (Photo by Dean Treml/Getty Images)

The Queen in New Zealand

Britians Queen Elizabeth arrives at a Garden Reception at Government House February 26, 2002 in Auckland, New Zealand. Hundreds of guests attended the reception. The Queen and her husband Prince Philip, The Duke of Edinburgh, have been in New Zealand for five days and leave tomorrow morning for Australia. (Photo by Dean Treml/Getty Images)

Queen Elizabeth II In 2002

Queen Elizabeth II visits RAF Marham 30 January 2002, on the first public engagement of her Jubilee year. The Queen, Honorary Air Commodore of the base which is just a few miles from her Sandringham home, told wellwishers that her mother, who has not been seen in public since November 21, was fine and recovering from a bad cough. (Photo credit ANDREW PARSONS/AFP/Getty Images)

Queen Elizabeth In 2005

Clarence House official handout photo of the Prince of Wales and his new bride Camilla, Duchess of Cornwall, with their families (L-R back row) Prince Harry, Prince William, Tom and Laura Parker Bowles (L-R front row) Duke of Edinburgh, Britain's Queen Elizabeth II and Camilla's father Major Bruce Shand, in the White Drawing Room at Windsor Castle after their wedding ceremony, April 9, 2005 in Windsor, England. (Photo by Hugo Burnand/Pool/Getty Images)

Queen Elizabeth II In 2001

British Queen Elizabeth II (L) meets US singer/actress Jennifer Lopez (R) backstage at the Dominion Theatre in London, late 26 November 2001, after this year's Royal Variety Performance. (Photo credit ROGER ALLEN/AFP/Getty Images)

Queen Elizabeth II In 2002

Queen Elizabeth II arrives in a peach coloured dress to host the golden jubilee banquet for delegates of the Commonwealth Heads of Government Meeting (CHOGM) in Coolum, 02 March 2002. Representatives from 51 countries, including 35 heads of state, are assembled for the four-day biennial summit held on 02-05 March. (Photo credit TORSTEN BLACKWOOD/AFP/Getty Images)

Queen Elizabeth II In 2004

Britain's Queen Elizabeth II records her Christmas Day message in the Yellow Drawing Room at Buckingham Palace in London 15 December 2004. (Photo credit should read FIONA HANSON/AFP/Getty Images)

Queen Elizabeth II In 2004

Her Majesty the Queen of England smiles as she arrives at the Bankside Gallery in London as the Royal Waterclour Society celebrates its bicentenary in London 18 February, 2004. (Photo credit JIM WATSON/AFP/Getty Images)

Queen Elizabeth II With Prince Harry In 2005

Britain's Queen Elizabeth II and Prince Harry share a joke as they watch Prince Charles and his bride Camilla Duchess of Cornwall leave St George's Chapel in Windsor following their marriage blessing, 09 April 2005. Prince Charles and his longtime sweetheart Camilla Parker Bowles married today after two months of muddled preparations and a lifetime of waiting. April 09, 2005| Credit: ALASTAIR GRANT

Queen Elizabeth 2007

HRH Queen Elizabeth II smiles as she arrives for a State Banquet at State House on November 22, 2007 in Entebbe, Uganda. The Queen will open the Commonwealth Heads of Government Meeting on Friday. CHOGM will be attended by over 5000 delegates, The Prince of Wales and Duchess of Cornwall as well as UK Prime Minister Gordon Brown. (Photo by Chris Jackson/Getty Images)

Queen ELizabeth II In 2007

Britain's Queen Elizabeth II poses during the taping of her Christmas Day message to Britain and the Commonwealth in the 1844 Room at Buckingham Palace in London, 23 December 2007. The Queen's speech marks this year the 50th anniversary of her first televised Christmass message. (Photo credit Steve Parsons/AFP/Getty Images)

The Queen And Duke Of Edinburgh Open Carole Brown Health Centre

Queen Elizabeth II laughs as she is taken on a tour of the Carole Brown Health Centre on February 3, 2009 in Dersingham, England. The Queen attended on her own as the Duke of Edinburgh was unable to for health reasons. Amongst others the Queen met nurses, community team and primary care trust representatives. (Photo by Chris Jackson/Getty Images)

Queen Elizabeth II With Pope Benedict XVI

Britain's Queen Elizabeth II talks with Pope Benedict XVI during an audience in the Morning Drawing Room at the Palace of Holyroodhouse on day one of his four day state visit to the United Kingdom at Holyrood House on September 16, 2010 in Edinburgh, Scotland. Pope Benedict XVI is conducting the first state visit to the UK by a Pontiff. During the four day visit Pope Benedict will celebrate mass, conduct a prayer vigil as well as beatify Cardinal Newman at an open air mass in Cofton Park . His Holiness will meet The Queen as well as political and religious representatives. (Photo by David Cheskin - WPA Pool/Getty Images)

Queen Elizabeth II With President Barack Obama And First Lady Michelle Obama

President Barack Obama and First Lady Michelle Obama are welcomed by Her Majesty Queen Elizabeth II to Buckingham Palace in London, April 1, 2009. Official White House Photo by Pete Souza

Queen Elizabeth II With Barack Obama In 2011

US President Barack Obama, first lady Michelle Obama, Queen Elizabeth II and Prince Philip, Duke of Edinburgh pose for a photograph as they arrive to Buckingham Palace on May 24, 2011 in London, England. The 44th President of the United States, Barack Obama, and his wife Michelle are in the UK for a two day State Visit at the invitation of HM Queen Elizabeth II. During the trip they will attend a state banquet at Buckingham Palace and the President will address both houses of parliament at Westminster Hall. (Photo by Ben Gurr - WPA Pool/Getty Images)

Queen Elizabeth II In 2011

Members of the royal family join HM Queen Elizabeth II to celebrate her official birthday by taking part in the Trooping the Colour parade on June 11, 2011 in London, England. The Duke and Duchess of Cambridge will join other members of the royal family to take part in the ceremony which has marked the official birthday of the British sovereign since 1748. (Photo by Oli Scarff/Getty Images)

Queen Elizabeth II In 2012

Britain's Queen Elizabeth II talks with guests before officially opening the "Fortnum and Mason Diamond Jubilee Tea Salon" during an offical visit with Camilla, Duchess of Cornwall and Catherine, Duchess of Cambridge, to the department store in central London on March 1, 2012. The queen unveiled a plaque on the pavement to commemorate the refurbishment of Piccadily upon departure after touring the Fortnum and Mason store with their royal highnesses. (Photo credit LEON NEAL/AFP/Getty Images)

Queen Elizabeth II In 2012

Britain's Queen Elizabeth II waves as she leaves after an official visit with Camilla, Duchess of Cornwall and Catherine, Duchess of Cambridge, to a department store in central London on March 1, 2012. The queen unveiled a plaque on the pavement to commemorate the refurbishment of Piccadily upon departure after touring the Fortnum and Mason store with their royal highnesses. (Photo credit PAUL GROVER/AFP/Getty Images)

Queen Elizabeth II In 2012

Queen Elizabeth II (R) and Catherine, Duchess of Cambridge (L) watch a fashion show at De Montfort University on March 8, 2012 in Leicester, England. The royal visit to Leicester marks the first date of Queen Elizabeth II's Diamond Jubilee tour of the UK between March 8 and July 25, 2012. (Photo by Oli Scarff - WPA Pool / Getty Images)

Queen Elizabeth II In 2012

Britain's Queen Elizabeth II waves as she leaves St Paul's Cathedral after a national service of thanksgiving for the Queens Diamond Jubilee at in London on June 5, 2012. Britain's Queen Elizabeth II wraps up four days of diamond jubilee celebrations with a thanksgiving service and ceremonial carriage procession in London, a formal contrast to the spectacular pop tribute staged outside Buckingham Palace the day before. AFP PHOTO / BEN STANSALL / AFP / BEN STANSALL (Photo credit should read BEN STANSALL/AFP/Getty Images)

Queen Elizabeth II In 2012

Queen Elizabeth II and Prince William, Duke of Cambridge wave to the crowds from Buckingham Palace during the Diamond Jubilee carriage procession after the service of thanksgiving at St.Paul?s Cathedral on the Mall on June 5, 2012 in London, England. For only the second time in its history the UK celebrates the Diamond Jubilee of a monarch. Her Majesty Queen Elizabeth II celebrates the 60th anniversary of her ascension to the throne. Thousands of wellwishers from around the world have flocked to London to witness the spectacle of the weekend's celebrations. (Photo by Dan Kitwood/Getty Images)

Queen Elizabeth II In 2012

Catherine, Duchess of Cambridge and Queen Elizabeth II watch part of a children's sports event while visiting Vernon Park during a Diamond Jubilee visit to Nottingham on June 13, 2012 in Nottingham, England. (Photo by Phil Noble - WPA Pool/Getty Images)

Queen Elizabeth II In 2014

US actress Angelina Jolie (R) is presented with the Insignia of an Honorary Dame Grand Cross of the Most Distinguished Order of St Michael and St George by Britain's Queen Elizabeth II in the 1844 Room at Buckingham Palace in central London, on October 10, 2014. Angelina Jolie was awarded an honorary damehood (DCMG) for services to UK foreign policy and the campaign to end war zone sexual violence. (Photo credit Anthony Devlin/AFP/Getty Images)

Queen Elizabeth II With Pope Fracis

Pope Francis welcomes Queen Elizabeth II for a private audience during their one-day visit to Rome on April 3, 2014 in Vatican City, Vatican. During their brief visit The Queen and the Duke of Edinburgh will have lunch with Italian President Giorgio Napolitano and an audience with Pope Francis at the Vatican. The Queen was originally due to travel to Rome in April 2013 but the visit was postponed due to her ill health. The audience with Pope Francis will be the fifth meeting The Queen, who is head of the Church of the England, has held with a Pope in the Vatican. (Photo by Arthur Edwards/WPA Pool/Getty Images)

Queen Elizabeth II In 2015

Queen Elizabeth II reacts after presenting New Colours to the 1st Battalion Welsh Guards at Windsor Castle on April 30, 2015 in London, United Kingdom. (Cathal McNaughton - Pool /Getty Images)

Queen Elizabeth II In 2015

Queen Elizabeth II proceeds through the Royal Gallery before the State Opening of Parliament in the House of Lords at the Palace of Westminster on May 27, 2015 in London, England. (Photo by Suzanne Plunkett /WPA Pool/Getty Images)

Queen Elizabeth II In 2015

(L-R) Princess Anne, Princess Royal, Camilla, Duchess of Cornwall, Prince Charles, Prince of Wales, Prince George of Cambridge,Prince William, Duke of Cambridge, Catherine, Duchess of Cambridge, Queen Elizabeth II, James, Viscount Severn, Prince Harry, Prince Philip, Duke of Edinburgh and Prince Andrew, Duke of York look out on the balcony of Buckingham Palace during the Trooping the Colour on June 13, 2015 in London, England. . The ceremony is Queen Elizabeth II's annual birthday parade and dates back to the time of Charles II in the 17th Century when the Colours of a regiment were used as a rallying point in battle. (Photo by Chris Jackson/Getty Images)

Queen Elizabeth II In 2015

(L-R) Prince George of Cambridge,Prince William, Duke of Cambridge, Catherine, Duchess of Cambridge, Queen Elizabeth II, Prince Harry look out on the balcony of Buckingham Palace during the Trooping The Colour ceremony on June 13, 2015 in London, England. The ceremony is Queen Elizabeth II's annual birthday parade and dates back to the time of Charles II in the 17th Century, when the Colours of a regiment were used as a rallying point in battle. (Photo by Chris Jackson/Getty Images)

Queen Elizabeth II In 2015

Britain's Queen Elizabeth II greets members of the public as she walks across the Pariser Platz near Berlin's landmark Brandenburg Gate on June 26, 2015. British Queen Elizabeth II is in Germany for a three-day visit. (Photo credit JOHN MACDOUGALL/AFP/Getty Images)

Queen Elizabeth II In 2015

Catherine, Duchess of Cambridge, Prince William, Duke of Cambridge, Princess Charlotte of Cambridge and Prince George of Cambridge, Queen Elizabeth II and Prince George's nanny, Maria Teresa Turrion Borrallo leave the Church of St Mary Magdalene on the Sandringham Estate for the Christening of Princess Charlotte of Cambridge on July 5, 2015 in King's Lynn, England. July 05, 2015| Credit: Chris Jackson

Queen Elizabeth II In 2015

Camilla, Duchess of Cornwall and Queen Elizabeth II attend a horse whispering demonstation by Brooke Global Ambassador Monty Roberts at the Royal Mews, Buckingham Palace on October 21, 2015 in London, England. The Brooke is an international animal welfare charity working to improve the lives of horses, donkeys and mules. October 21, 2015| Credit: Chris Jackson

Queen Elizabeth II In 2015

Queen Elizabeth II speaks to guests during a reception for The Queen Elizabeth Prize for Engineering in the Throne Room at Buckingham Palace on October 26, 2015 in London, England. The Queen has presented a £1 million engineering prize to Dr Robert Langer at a reception at Buckingham Palace. (Photo by Jonathan Brady - WPA Pool /Getty Images)

Queen Elizabeth II In 2015

Queen Elizabeth II prepares to greet Kazakhstan President Nursultan Nazarbayev at Buckingham Palace on November 4, 2015 in London, England. The President of Kazakhstan is in the UK on an official visit as a guest of the British Government. He is accompanied by his wife and daughter, Dariga Nazarbayeva, who is also the Deputy Prime Minister. November 04, 2015| Credit: Chris Jackson

Queen Elizabeth II In 2015

Queen Elizabeth II sits at a desk in the 18th Century Room at Buckingham Palace, after recording her Christmas Day broadcast to the Commonwealth on December 25, 2015 in London, England. (Photo by John Stillwell-WPA Pool/Getty Images)

Queen Elizabeth II In 2015

Queen Elizabeth II attends a Christmas Day church service at Sandringham on December 25, 2015 in King's Lynn, England. December 25, 2015| Credit: Chris Jackson

Queen Elizabeth II In 2016

Queen Elizabeth II arrives at the Queen Elizabeth II delivery office in Windsor with Prince Philip, Duke of Edinburgh on April 20, 2016 in Windsor, England.(Photo by Chris Jackson - WPA Pool/Getty Images)