LONDON, UNITED KINGDOM - JUNE 12: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Prince William, Duke of Cambridge, Catherine, Duchess of Cambridge and Prince Harry attend 'The Patron's Lunch' celebrations to mark Queen Elizabeth II's 90th birthday on The Mall on June 12, 2016 in London, England. (Photo by Max Mumby/Indigo/Getty Images)
