Britain's Prince William (R) and his wife Kate, Duchess of Cambridge, accompanied by her maid of honour Pippa Middleton leave after wedding service in Westminster Abbey in central London on April 29, 2011.(credit: KIRSTY WIGGLESWORTH/AFP/Getty Images)
Graduation Gown
Pattern Dress
Then Kate Middleton attends the 46664 concert in celebration of Nelson Mandela's life at Hyde Park on June 27, 2008 in London, England. (credit: Dan Kitwood/Getty Images)
Wimbledon Dress
Prince William's then girlfriend Kate Middleton attends day six of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on June 28, 2008 in London, England. (credit: Ryan Pierse/Getty Images)
The Blue Dress
Black Blazer
Prince William and his then finacee Catherine Middleton arrive for a Christmas reception in aid of the Teenager Cancer Trust on December 18, 2010 in Fakenham, England. (credit: Chris Jackson/Getty Images)
Chic Scarf
Kate Middleton and Prince William smile as they visit Trearddur Bay Lifeboat Station at Anglesey on February 24, 2011 in Trearddur, Wales. (credit: Chris Jackson/Getty Images)
Red Coat
Kate Middleton during a visit to the University of St Andrews on February 25, 2011 in St Andrews, Scotland. (credit: Danny Lawson - WPA Pool/Getty Images)
Red Coat
Prince William and Kate Middleton Visit the University of St Andrews on February 25, 2011 in St Andrews, Scotland. (credit: Chris Jackson/Getty Images)
Double-Breasted Coat
Catherine, the Duchess of Cambridge, then Kate Middleton, and Prince William put in a fence post as they visit Greenmount Agricultural College on March 8, 2011 in Belfast, Northern Ireland. (credit: Chris Jackson/Getty Images)
Double-Breasted Coat
Catherine, the Duchess of Cambridge, then Kate Middleton, arrives at City Hall on March 8, 2011 in Belfast, Northern Ireland. (credit: Chris Jackson/Getty Images)
Steel Blue Dress
Catherine, the Duchess of Cambridge, then Kate Middleton, laughs during a visit to Whitton Park on April 11, 2011 in Darwen, England. (credit: Chris Jackson/Getty Images)
Wedding Night Fashion
The Wedding Gown
Britain's Prince William's wife Catherine, Duchess of Cambridge, smiles as they travel in the 1902 State Landau carriage along the Processional Route to Buckingham Palace, in London, on April 29, 2011. (credit: BEN STANSALL/AFP/Getty Images)
The Wedding Gown
Catherine, Duchess of Cambridge, turns back as she leaves the balcony of Buckingham Palace London after after her wedding to Britain's Prince William, on April 29, 2011. (credit: LEON NEAL/AFP/Getty Images)
Navy Blue Lace
The Duchess of Cambridge waves to well-wishers, as she and the Duke of Cambridge arrive at the Rideau Hall in Ottawa Canada. (credit:John Stillwell/PA/Getty Images)
The Wedding Gown
Catherine, Duchess of Cambridge, comes out of Westminster Abbey, with her husband Britain's Prince William (not pictured) following their wedding ceremony, in central London, on April 29, 2011. (credit: CARL DE SOUZA/AFP/Getty Images)
The Wedding Gown
Wedding Night Fashion
Kate, the Duchess of Cambridge leaves Clarence House to travel to Buckingham Palace for the evening celebrations following her wedding to Prince William earlier in the day on April 29, 2011 in London. (credit: JOHN STILLWELL/AFP/Getty Images)
Tan Dress
U.S. First Lady Michelle Obama meets with Catherine, Duchess of Cambridge at Buckingham Palace on May 24, 2011 in London, England. (credit: Toby Melville - WPA Pool/Getty Images)
Gala Gown
Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge arrive at the ARK 10th Anniversary Gala Dinner at Perk's Field on June 9, 2011 in London, England. (credit: Arthur Edwards - WPA/Getty Images)
Black Hat
Catherine, Duchess of Cambridge makes her way down the Mall during the Trooping the Colour procession on June 11, 2011 in London, England.
Gala Gown
Catherine, the Duchess of Cambridge attends the 10th Annual Absolute Return for Kids (ARK) Gala Dinner on behalf of the Foundation of Prince William and Prince Harry, at Perks Field, Kensington Palace, in London, on June 9, 2011. (credit: ARTHUR EDWARDS/AFP/Getty Images)
Royal Pea Coat
Catherine, Duchess of Cambridge presents medals to members of the Irish Guards at the Victoria Barracks on June 25, 2011 in Windsor, England. The Duchess of Cambridge and Duke of Cambridge are at the barracks to present service medals to members of the Irish Guards. (credit: Chris Jackson/Getty Images)
Royal Pea Coat
Catherine, Duchess of Cambridge presents medals to members of the Irish Guards at the Victoria Barracks on June 25, 2011 in Windsor, England. The Duchess of Cambridge and Duke of Cambridge are at the barracks to present service medals to members of the Irish Guards. (credit: Chris Jackson/Getty Images)
Royal Pea Coat
Catherine, Duchess of Cambridge visits Victoria Barracks during a medal parade for the 1st Battalion Irish Guards Regiment on June 25, 2011, in Windsor, United Kingdom . (credit: Carl Court - WPA Pool/Getty Images)
Dignified Hat
Catherine, Duchess of Cambridge, smiles as she watches the procession at the Order of the Garter Service at St George's Chapel in Windsor Castle on June 13, 2011 in Windsor. (credit: KIRSTY WIGGLESWORTH/AFP/Getty Images)
Tennis Attire
Catherine, Duchess of Cambridge attends the fourth round match between Tsvetana Pironkova of Bulgaria and Venus Williams of the United States on Day Seven of the Wimbledon Lawn Tennis Championships at the All England Lawn Tennis and Croquet Club on June 27, 2011 in London, England. (credit: Clive Brunskill/Getty Images)
Skirt Suit
Catherine, Duchess of Cambridge arrives to board a plane of the Royal Canadian Air Force at London's Heathrow Airport on June 30, 2011 in London, England. (credit: Steve Parsons - WPA Pool/Getty Images)
Navy Blue Lace
Catherine, Duchess of Cambridge arrives at Macdonald-Cartier International Airport on June 30, 2011 in Ottawa, Canada. (credit: Chris Jackson-Pool/Getty Images)
Royal Clutch
Catherine, Duchess of Cambridge attends a session of Youth Parliament at the Legislative Assembly on July 5, 2011 in Yellowknife, Canada. (credit: Chris Jackson-Pool/Getty Images)
Red And White
Catherine, Duchess of Cambridge visits the Canadian Museum of Civilisation to attend a citizenship ceremony, on July 1, 2011 in Gatineau, Canada. (credit: Arthur Edwards-Pool/Getty Images)
Red And White
Catherine, Duchess of Cambridge attends Canada Day Celebrations at Parliament Hill on day 2 of the Royal Couple's North American Tour on July 1, 2011 in Ottawa, Canada. (credit: Mark Large - Pool/Getty Images)
Purple Dress
Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge attend the Evening National Canada Day Celebrations accompanied by representatives of the National Capitol Commission on Parliament Hill on July 1, 2011 in Ottawa, Canada. (credit: David Rose - Pool/Getty Images)
Silver Style
Catherine, Duchess of Cambridge arrives on board HMCS Montreal on July 2, 2011 in Montreal, Canada. (credit: Chris Jackson-Pool/Getty Images)
Blue Dress
Catherine, Duchess of Cambridge visits a drop in center for homeless and young people on July 3, 2011 in Quebec, Canada. (credit: Arthur Edwards - Pool / Getty Images)
Blue Dress
Catherine, Duchess of Cambridge visits a drop in center for homeless and young people on July 3, 2011 in Quebec, Canada. (credit: Arthur Edwards - Pool / Getty Images)
Blue Dress
Catherine, Duchess of Cambridge visits a drop in center for homeless and young people on July 3, 2011 in Quebec, Canada. (credit: Arthur Edwards - Pool / Getty Images)
Ivory Dress
Catherine, Duchess of Cambridge walks past well-wishers as she and Prince William, Duke of Cambridge (not pictured) visit Province House on July 5, 2011 in Charlottetown, Canada. (credit: Ian Vogler - Pool/Getty Images)
Fashionable Life Vest
The Duchess of Cambridge steers a Dragon boat as they make there way to the start, in a race against her husband across a lake in Dalvey by-the Sea, on Prince Edward Island in eastern Canada. (credit John Stillwell/PA/Getty Images)
Jacket
Catherine, Duchess of Cambridge arrives on shore after rowing dragon boats across Dalvay lake on July 3, 2011 in Charlottetown, Canada. (credit: Chris Jackson/Getty Images)
Red Scarf
Catherine, Duchess of Cambridge wave as Prince William, Duke of Cambridge takes part in helicopter maneuvers called 'water birding' across Dalvay lake on July 4, 2011 in Charlottetown, Canada. (credit: Arthur Edwards - Pool/Getty Images)
Summer Dress
Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge look on during an an official welcome ceremony at the Somba K'e Civic Plaza on July 5, 2011 in Yellowknife, Canada. (credit: Chris Jackson/Getty Images)
Summer Dress
Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge look on during an an official welcome ceremony at the Somba K'e Civic Plaza on July 5, 2011 in Yellowknife, Canada. (credit: Chris Jackson/Getty Images)
Summer Dress
Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge look on during an an official welcome ceremony at the Somba K'e Civic Plaza on July 5, 2011 in Yellowknife, Canada. (credit: Chris Jackson/Getty Images)
Blue Blazer
Catherine, Duchess of Cambridge visits a part of town devastated by a fire in May 2011, on July 7, 2011 in Slave Lake, Alberta. (credit: Mark Large - Pool/Getty Images)
Summer Dress
Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge look on during an an official welcome ceremony at the Somba K'e Civic Plaza on July 5, 2011 in Yellowknife, Canada. (credit: Chris Jackson/Getty Images)
Sharp Coat
Catherine, the Duchess of Cambridge gets out of her car as she arrives at the hotel with Prince William after their arrival in Yellowknife, Northwest Territories on their nine-day tour in Canada July 4, 2011. (Photo credit should read TIMOTHY A. CLARY/AFP/Getty Images)
Canadian Wild
Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge visit Blachford Lake near Yellowknife on July 5, 2011 in Blatchford Lake, Northwest Territories, Canada. (credit: Arthur Edwards - Pool/GettyImages)
