LONDON, UNITED KINGDOM - FEBRUARY 11: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Catherine, Duchess of Cambridge, accompanied be her Police Protection Officer, leaves after attending The Portrait Gala 2014: Collecting to Inspire at the National Portrait Gallery on February 11, 2014 in London, England. (Photo by Max Mumby/Indigo/Getty Images)