LONDON, UNITED KINGDOM - DECEMBER 05: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge attend the Royal film performance of 'Mandela: Long Walk to Freedom' at Odeon Leicester Square on December 5, 2013 in London, England. (Photo by Max Mumby/Indigo/Getty Images)
