LONDON, ENGLAND - JULY 21: Outfits worn by Queen Elizabeth II including the coat and hat worn at the Service of Thanksgiving for her 90th birthday celebration at St Paul's Cathedral in 2016 (green) are displayed during a photocall at Buckingham Palace on July 21, 2016 in London, England. The piece makes up part of a forthcoming exhibit 'Fashioning a Reign: 90 Years of Style from The Queen's Wardrobe' to coincide with the Summer Opening of Buckingham Palace. The exhibit includes outfits worn by the Queen from State events to family celebrations and runs until October 2, 2016.  (Photo by Dan Kitwood/Getty Images)