LONDON, ENGLAND - NOVEMBER 07: Catherine, Duchess of Cambridge, Prince William, Duke of Cambridge and Prince Andrew, Duke of York chat at the Royal Albert Hall for the Annual Festival of Remembrance on November 7, 2015 in London, England. (Photo by Chris Jackson - WPA Pool/Getty Images)

LONDON, ENGLAND - NOVEMBER 07:  Catherine, Duchess of Cambridge, Prince William, Duke of Cambridge and Prince Andrew, Duke of York chat at the Royal Albert Hall for the Annual Festival of Remembrance on November 7, 2015 in London, England.  (Photo by Chris Jackson - WPA Pool/Getty Images)