Queen Elizabeth II arrives at Richmond International Airport on Thursday, May 3, 2007, in Richmond, Va. The queen and her husband, Prince Philip, the Duke of Edinburgh, began a six-day state visit of the U.S. to commemorate the 400th anniversary of the Jamestown settlement. It marks the fourth time that the queen has visited the U.S. The royal couple also attended the Kentucky Derby before traveling to Washington.
Britain's Queen Elizabeth II arrives at a Jamestown, Va., archaeological site Friday, May 4, 2007. The queen visited Virginia to mark the 400th anniversary of the founding of the Jamestown settlement. During her visit to the U.S., the queen has displayed a wide array of headdress.
Queen Elizabeth II visits students and alumni in the Wren Building at The College of William and Mary, in Williamsburg, Va., Friday May 4, 2007.
Britain's Queen Elizabeth II is pictured with the Kentucky Derby winner's trophy at Churchill Downs in Louisville, Ky., during the third day of her state visit to the United States, Saturday, May 5, 2007.
Queen Elizabeth II and her husband, Prince Philip, arrive at Andrews Air Force Base, Md., Sunday, May 6, 2007, a day after attending her first Kentucky Derby. The royal couple met President Bush and attended an official state dinner at the White House on Monday.
Queen Elizabeth II participates in a ceremony on the South Lawn of the White House Monday, May 7, 2007, in Washington. The queen and Prince Philip, the Duke of Edinburgh, are on a six day trip to the United States.
Queen Elizabeth II of England greets guests during a garden party celebrating her state visit to the U.S. at the British Embassy in Washington Monday, May 7, 2007.
Queen Elizabeth II, wearing a bejeweled tiara, toasts President George W. Bush after remarks at the start of a White House State Dinner for the British monarch and Prince Philip Monday, May 7, 2007, in Washington.
Queen Elizabeth II and NASA Astronaut Michael Foale greet each other prior to a video link with the crew of the International Space Station at the NASA Goddard Space Flight Center, Tuesday, May 8, 2007, in Greenbelt, Md. The queen was on the last of a six-day visit to the U.S with her husband, Prince Philip, the Duke of Edinburgh.
Queen Elizabeth II visits the MacCutcheon Patient Play Room at Children's National Medical Center in Washington, Tuesday, May 8, 2007.
Queen Elizabeth II holds on to her hat in high winds during a visit to RAF Valley where her grandson Prince William is stationed as a search and rescue helicopter pilot, on April 1, 2011, in Anglesey, north Wales.
Queen Elizabeth II arrives at the Woodbine Racetrack for 151st Running of The Queen?s Plate Stakes on July 4, 201,0 in Toronto, Canada. The Queen and Duke of Edinburgh were on an eight-day tour of Canada.
Britain's Queen Elizabeth II and Pope Benedict XVI. walk through the gardens at the Palace of Holyroodhouse in Edinburgh, Scotland. Thursday Sept. 16, 2010. The Pope was on a four day visit to Britain.
Queen Elizabeth waves goodbye as she boards her plane heading to New York at Pearson International Airport in Toronto Tuesday, July 6, 2010.
Queen Elizabeth II addresses the United Nations General Assembly, Tuesday, July 6, 2010, at United Nations headquarters.
Queen Elizabeth II, right, waves to the crowd during Canada Day celebrations on Parliament Hill in Ottawa on Thursday, July 1, 2010.
Britain's Queen Elizabeth II arrives by carriage at the parade ring on the first day of the Royal Ascot horse racing meeting at Ascot near Windsor, England, Tuesday, June, 16, 2009.
Britain's Queen Elizabeth II and Prince Philip arrive by carriage in the parade ring, on the second day of the Royal Ascot horse racing meeting at Ascot near Windsor, England, Wednesday, June, 17, 2009.
An officer of the Blues and Royals, and a police offer salute, as Britain's Queen Elizabeth arrives for the Order of the Garter service at St George's Chapel at Windsor Castle in Windsor, England, Monay June 15, 2009. The Order of the Garter is the most senior and the oldest British Order of Chivalry and was founded by Edward III in 1348.
Britain's Queen Elizabeth II smiles at Prince Philip on Horse Guards Parade in London during the annual Trooping the Colour parade Saturday June 13, 2009.
Queen Elizabeth II leaves after attending a Christmas Day church service at St Mary Magdalene Church in Sandringham, Norfolk, in the east of England, on Dec. 25, 2010.
Queen Elizabeth II attends the traditional Easter Sunday church service at St. George's Chapel on April 4, 2010, in Windsor, England.
Queen Elizabeth II attends Royal Ascot Ladies Day on June 17, 2010 ,in Ascot, England.son