WINDSOR, UNITED KINGDOM - MAY 14: Zara Phillips, The Daughter Of Princess Anne, At Windsor (Photo by Tim Graham Photo Library via Getty Images)
WINDSOR, UNITED KINGDOM - JUNE 17: Zara Phillips Age 3 In Cheeky Mood While Watching Her Uncle At A Polo Match In Windsor. More Used To Dressing In Casual Clothes Than Pretty Dresses, Zara Laughs For The Press Photographers. (Photo by Tim Graham Photo Library via Getty Images)
London, England, 15th June 1985, Prince William (centre) watches the Trooping of the Colour from the balcony of Buckingham Palace with Lady Zara Phillips (left) and Lady Gabriella Windsor during the celebrations for the Queen's "official" birthday (Photo by Popperfoto via Getty Images/Getty Images)
WINDSOR, UNITED KINGDOM - MAY 24: Zara Phillips Looking Serious At The Windsor Horse Trials 22-24 May (Photo by Tim Graham Photo Library via Getty Images)
SANDRINGHAM, UNITED KINGDOM - DECEMBER 25: Prince William With His Cousin Zara Phillips As They Attend Church In Sandringham On Christmas Day. Behind Them Is Mark Phillips. (Photo by Tim Graham Photo Library via Getty Images)
