Queen Elizabeth II's Birthday Parade: Trooping The Colour [Getty Images]

LONDON, ENGLAND - JUNE 14: (L-R) Prince Charles, Prince of Wales, Prince William, Duke of Cambridge and Princess Anne, Princess Royal travel by horse during Trooping the Colour - Queen Elizabeth II's Birthday Parade, at The Royal Horseguards on June 14, 2014 in London, England. (Photo by Chris Jackson/Getty Images)

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