LONDON, UNITED KINGDOM - DECEMBER 18: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge leave Buckingham Palace after attending a Christmas Lunch hosted by Queen Elizabeth II on December 18, 2013 in London, England. (Photo by Max Mumby/Indigo/Getty Images)
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Getty Images Entertainment Max Mumby/Indigo