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LONDON, UNITED KINGDOM - DECEMBER 08: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge attend the annual Diplomatic Reception at Buckingham Palace on December 8, 2015 in London, England. (Photo by Max Mumby/Indigo/Getty Images)

LONDON, UNITED KINGDOM - DECEMBER 08: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge attend the annual Diplomatic Reception at Buckingham Palace on December 8, 2015 in London, England. (Photo by Max Mumby/Indigo/Getty Images)
Getty Images

Getty Images Entertainment Max Mumby/Indigo