British royals attend Olympic Equestrian

Members of the British royal family attend the Olympic equestrian events to watch Zara Phillips, the granddaughter of Queen Elizabeth II, win a silver medal for Great Britain. -- By Carla Thorpe, Yahoo! Sports

Olympics Day 4 - Equestrian

Zara Phillips of Great Britain riding High Kingdom knocks a rail 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 Jamie Squire/Getty Images)

Olympics Day 4 - Equestrian

Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge watch 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 Alex Livesey/Getty Images)

Britain's Catherine, Duchess of Cambridge, and Britain's Prince William

Britain's Catherine, Duchess of Cambridge, and Britain's Prince William, the Duke of Cambridge, watch the equestrian eventing cross country phase at the 2012 Summer Olympics, Monday, July 30, 2012, in London. (AP Photo/David Goldman)

Olympics Day 3 - Equestrian

LONDON, ENGLAND - JULY 30: Zara Phillips of Great Britain riding High Kingdom negotiates a jump in 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 Mike Hewitt/Getty Images)

Prince William & Prince Harry

Prince Harry (L) and Prince William, Duke of Cambridge attend 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)

Catherine, Duchess of Cambridge, and Britain's Prince William

Britain's Catherine, Duchess of Cambridge, and Britain's Prince William, the Duke of Cambridge read a program as they watch the equestrian eventing cross country phase at the 2012 Summer Olympics, Monday, July 30, 2012, in London. (AP Photo/David Goldman)

Zara Phillips, of Great Britain, reacts after riding her horse High Kingdom in the equestrian eventing cross-country stage at the 2012 Summer Olympics, Monday, July 30, 2012, in London. (AP Photo/Charlie Riedel)

Zara Phillips, of Great Britain, reacts after riding her horse High Kingdom in the equestrian eventing cross-country stage at the 2012 Summer Olympics, Monday, July 30, 2012, in London. (AP Photo/Charlie Riedel)

Zara Phillips, of Great Britain, reacts after riding her horse High Kingdom in the equestrian eventing cross-country stage at the 2012 Summer Olympics, Monday, July 30, 2012, in London. (AP Photo/Charlie Riedel)

Zara Phillips, of Great Britain, reacts after riding her horse High Kingdom in the equestrian eventing cross-country stage at the 2012 Summer Olympics, Monday, July 30, 2012, in London. (AP Photo/Charlie Riedel)

Zara Phillips

Zara Phillips of Great Britain rides High Kingdom as she competes in the equestrian eventing cross country phase at Greenwich Park, at the 2012 Summer Olympics, Monday, July 30, 2012, in London. (AP Photo/Markus Schreiber)

Camilla, Duchess of Cornwall, and Britain's Catherine, Duchess of Cambridge

Camilla, Duchess of Cornwall, and Britain's Catherine, Duchess of Cambridge, watch the equestrian eventing cross country phase at the 2012 Summer Olympics, Monday, July 30, 2012, in London. (AP Photo/David Goldman)

Zara Phillips

Zara Phillips of Great Britain rides High Kingdom as she competes in the equestrian eventing cross-country stage at the 2012 Summer Olympics, Monday, July 30, 2012, in London. (AP Photo/Ng Han Guan)

Britain's Catherine, Duchess of Cambridge, and Britain's Prince William

Britain's Catherine, Duchess of Cambridge, and Britain's Prince William, the Duke of Cambridge, watch the equestrian eventing cross country phase at the 2012 Summer Olympics, Monday, July 30, 2012, in London. (AP Photo/David Goldman)

Zara Phillips

Zara Phillips of Great Britain rides High Kingdom as she competes in the equestrian eventing cross-country phase at Greenwich Park, at the 2012 Summer Olympics, Monday, July 30, 2012, in London. (AP Photo/Ng Han Guan)

Camilla, Duchess of Cornwall

Camilla, Duchess of Cornwall, watches the equestrian eventing cross country phase at the 2012 Summer Olympics, Monday, July 30, 2012, in London. (AP Photo/David Goldman)

Zara Phillips

Zara Phillips of Great Britain rides High Kingdom as she competes in the equestrian eventing cross-country phase at Greenwich Park, at the 2012 Summer Olympics, Monday, July 30, 2012, in London. (AP Photo/Markus Schreiber)

Zara Phillips

Zara Phillips of Great Britain rides High Kingdom as she competes in the equestrian eventing cross country phase at Greenwich Park, at the 2012 Summer Olympics, Monday, July 30, 2012, in London. (AP Photo/Markus Schreiber)

Olympics Day 2 - Equestrian

LONDON, ENGLAND - JULY 29: 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)

Princess Anne

Princess Anne, center, mother of Britain equestrian rider Zara Phillips, looks on during mens badminton competition at the 2012 Summer Olympics, Monday, July 30, 2012, in London. (AP Photo/Saurabh Das)

Olympics Day 2 - Equestrian

LONDON, ENGLAND - JULY 29: Zara Phillips of Great Britain and her horse High Kingdom compete in Individual Eventing 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 runs with her horse High Kingdom during horse inspection for the equestrian eventing competition at Greenwich Park, the site for the equestrian and modern pentathlon events at the 2012 Summer Olympics, Friday, July 27, 2012, in London. (AP Photo/Markus Schreiber)

Olympics - Opening Day

LONDON, ENGLAND - JULY 27: Zara Phillips of Great Britain and her mount High Kingdom during an Equestrian Eventing Horse Inspection session ahead of the London 2012 Olympic Games at Greenwich Park on July 27, 2012 in London, England. (Photo by Alex Livesey/Getty Images)

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