LONDON, ENGLAND - JUNE 12: Catherine, Duchess of Cambridge greets guests attending 'The Patron's Lunch' celebrations for The Queen's 90th birthday on The Mall on June 12, 2016 in London, England. 10,000 guests have gathered on The Mall for a lunch to celebrate The Queen's Patronage of more than 600 charities and organisations. The lunch is part of a weekend of celebrations marking Queen Elizabeth II's 90th birthday and 63 year reign. The Duke of Edinburgh and other members of The Royal Family are also in attendance. During the lunch a carnival parade will travel down The Mall and around St James's Park.  (Photo by Arthur Edwards - WPA Pool/Getty Images)