Queen Elizabeth II and Members Of The Royal Family Attend The Order Of The Garter Service [Getty Images]

WINDSOR, ENGLAND - JUNE 18: Catherine, Duchess of Cambridge watches the Order of the Garter procession at Windsor Castle on June 18, 2011 in Windsor, England. The Order of the Garter is the senior and oldest British Order of Chivalry, founded by Edward III in 1348. Membership in the order is limited to the sovereign, the Prince of Wales, and no more than twenty-four members. (Photo by Paul Edwards - WPA Pool/Getty Images)

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