2012 Olympic Games - Opening Ceremony

LONDON, ENGLAND - JULY 27: Former British Prime Minister Tony Blair, Cherie Blair, David Miliband, and Prince William, Duke of Cambridge watch on during the Opening Ceremony of the London 2012 Olympic Games at the Olympic Stadium on July 27, 2012 in London, England. (Photo by Pool/Getty Images)

Olympics Day 3 - Gymnastics - Artistic

LONDON, ENGLAND - JULY 30: Prince William, Duke of Cambridge, and Prince Harry cheer at the Artistic Gymnastics Men's Team final on Day 3 of the London 2012 Olympic Games at North Greenwich Arena on July 30, 2012 in London, England. (Photo by Ronald Martinez/Getty Images)

Olympics Day 4 - Equestrian

LONDON, ENGLAND - JULY 31: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge look on during the Show Jumping Eventing Equestrian on Day 4 of the London 2012 Olympic Games at Greenwich Park on July 31, 2012 in London, England. (Photo by Pascal Le Segretain/Getty Images)

Olympics Day 4 - Equestrian

LONDON, ENGLAND - JULY 31: Prince William, Duke of Cambridge, Catherine, Duchess of Cambridge and Prince Harry look on during the Show Jumping Eventing Equestrian on Day 4 of the London 2012 Olympic Games at Greenwich Park on July 31, 2012 in London, England. (Photo by Pascal Le Segretain/Getty Images)

Olympics Day 4 - Equestrian

LONDON, ENGLAND - JULY 31: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge look on during the Show Jumping Eventing Equestrian on Day 4 of the London 2012 Olympic Games at Greenwich Park on July 31, 2012 in London, England. (Photo by Pascal Le Segretain/Getty Images)

Olympics Day 4 - Equestrian

LONDON, ENGLAND - JULY 31: Prince William, Duke of Cambridge, Catherine, Duchess of Cambridge and Prince Harry look on during the Show Jumping Eventing Equestrian on Day 4 of the London 2012 Olympic Games at Greenwich Park on July 31, 2012 in London, England. (Photo by Pascal Le Segretain/Getty Images)

Britain's Prince William and his wife Ca

Britain's Prince William and his wife Catherine (C-back) applaud with Britain's Prime Minister David Cameron and his wife Samantha (front) during the opening ceremony of the London 2012 Olympic Games on July 27, 2012 at the Olympic stadium in London. AFP PHOTO / POOL / MATT DUNHAM (Photo credit should read MATT DUNHAM/AFP/GettyImages)

Olympics Day 3 - Equestrian

(Photo by Pascal Le Segretain/Getty Images)

LONDON, ENGLAND - JULY 30: Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge watch the Eventing Cross Country Equestrian event on Day 3 of the London 2012 Olympic Games at Greenwich Park on July 30, 2012 in London, England. (Photo by Pascal Le Segretain/Getty Images)

Olympics Day 4 - Equestrian

LONDON, ENGLAND - JULY 31: Catherine, Duchess of Cambridge attends the Show Jumping Eventing Equestrian on Day 4 of the London 2012 Olympic Games at Greenwich Park on July 31, 2012 in London, England. (Photo by Pascal Le Segretain/Getty Images)

2012 Olympic Games - Opening Ceremony

LONDON, ENGLAND - JULY 27: Catherine, Duchess of Cambridge (R) is seen during the Opening Ceremony of the London 2012 Olympic Games at the Olympic Stadium on July 27, 2012 in London, England. (Photo by Pascal Le Segretain/Getty Images)

2012 Olympic Games - Opening Ceremony

LONDON, ENGLAND - JULY 27: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge during the Opening Ceremony of the London 2012 Olympic Games at the Olympic Stadium on July 27, 2012 in London, England. (Photo by Pascal Le Segretain/Getty Images)

Olympics Day 3 - Equestrian

LONDON, ENGLAND - JULY 30: Catherine, Duchess of Cambridge (L) with Carole Annett at the Eventing Cross Country Equestrian event on Day 3 of the London 2012 Olympic Games at Greenwich Park on July 30, 2012 in London, England. (Photo by Pascal Le Segretain/Getty Images)

Olympics - Day 1 - Royals at the Olympics

LONDON, ENGLAND - JULY 28: Queen Elizabeth II and Lord Sebastian Coe, Chairman of the London Organising Committee of the Olympic Games visit the Aquatics Centre on day one of the London 2012 Olympic Games at the Olympic Park on July 28, 2012 in London, England. (Photo by Jeff J Mitchell/Getty Images)

Britain's Queen Elizabeth II declares th

Britain's Queen Elizabeth II declares the London 2012 Olympic Games open during the opening ceremony on July 27, 2012 at the Olympic Stadium in London. AFP PHOTO / ADRIAN DENNIS (Photo credit should read ADRIAN DENNIS/AFP/GettyImages)

Britain's Queen Elizabeth declares the O

Britain's Queen Elizabeth declares the Olympic Games open during the opening ceremony of the London 2012 Olympic Games at the Olympic Stadium July 27, 2012 in London. AFP PHOTO / Pool / Toby Melville (Photo credit should read TOBY MELVILLE/AFP/GettyImages)

Britain's Queen Elizabeth II (R) stands

Britain's Queen Elizabeth II (R) stands with spokesman for London 2012 Don Foster during the opening ceremony of the London 2012 Olympic Games on July 27, 2012 at the Olympic stadium in London. AFP PHOTO / POOL / MATT DUNHAM (Photo credit should read MATT DUNHAM/AFP/GettyImages)

Britain's Queen Elizabeth II (C) declare

Britain's Queen Elizabeth II (C) declares the 2012 London Olympic Games open during the opening ceremony of the London 2012 Olympic Games on July 27, 2012 at the Olympic stadium in London. AFP PHOTO / FABRICE COFFRINI (Photo credit should read FABRICE COFFRINI/AFP/GettyImages)

Queen Elizabeth II Visits Olympic Park

LONDON, UNITED KINGDOM - JULY 28: Queen Elizabeth II talks to Indian steel magnate Lakshmi Mittal who sponsored the Orbit and his wife, with Boris Johnson Mayor of London during a tour of the Olympic Park on day one of the London 2012 Olympics Games on July 28, 2012 in London, England. (Photo by John Stillwell - WPA Pool/Getty Images)

Britain's Queen Elizabeth II (R) meets R

Britain's Queen Elizabeth II (R) meets Ricardo Martinelli, President of Panama, at a reception for Heads of State and Heads of Government, at Buckingham Palace, in central London, on July 27, 2012. AFP PHOTO / DOMINIC LIPINSKI/POOL (Photo credit should read Dominic Lipinski/AFP/GettyImages)

Olympics Day 4 - Equestrian

LONDON, ENGLAND - JULY 31: Zara Phillips of Great Britain riding High Kingdom after competing in the Individual Jumping Equestrian Final on Day 4 of the London 2012 Olympic Games at Greenwich Park on July 31, 2012 in London, England. (Photo by Alex Livesey/Getty Images)

Britain's Princess Anne (L) and her fath

Britain's Princess Anne (L) and her father Prince Philip, Duke of Edinburgh, watch as Britain's Zara Phillips competes in the Dressage event at the Equestrian Arena in Greenwich Park in London on July 29, 2012. AFP PHOTO / CARL COURT (Photo credit should read CARL COURT/AFP/GettyImages)

Olympics Day 2 - Equestrian

LONDON, ENGLAND - JULY 29: (EDITORS NOTE: Retransmission with alternate crop.) Zara Phillips of Great Britain on High Kingdom competes in the Dressage Equestrian event on Day 2 of the London 2012 Olympic Games at Greenwich Park on July 29, 2012 in London, England. (Photo by Alex Livesey/Getty Images)

Great Britain's Zara Phillips riding Hig

Great Britain's Zara Phillips riding High Kingdom competes in the Cross Country phase of the Eventing competition of the 2012 London Olympics at the Equestrian venue in Greenwich Park, London, July 30, 2012. AFP PHOTO / ADRIAN DENNIS (Photo credit should read ADRIAN DENNIS/AFP/GettyImages)

Olympics Day 4 - Equestrian

LONDON, ENGLAND - JULY 31: Zara Phillips of Great Britain riding High Kingdom in action in the Show Jumping Equestrian event on Day 4 of the London 2012 Olympic Games at Greenwich Park on July 31, 2012 in London, England. (Photo by Cameron Spencer/Getty Images)

Olympics Day 4 - Equestrian

LONDON, ENGLAND - JULY 31: Zara Phillips of Great Britain riding High Kingdom competes in the Individual Jumping Equestrian Final on Day 4 of the London 2012 Olympic Games at Greenwich Park on July 31, 2012 in London, England. (Photo by Alex Livesey/Getty Images)