LONDON, ENGLAND - JULY 13: Prince Charles, Prince of Wales attends a reception to mark The Duchess of Cornwall's 70th birthday at Clarence House on July 13, 2017 in London, England. (Photo by Tim P. Whitby - WPA Pool/Getty Images)
LONDON, ENGLAND - JULY 13: Prince Charles, Prince of Wales attends a reception to mark The Duchess of Cornwall's 70th birthday at Clarence House on July 13, 2017 in London, England. (Photo by Tim P. Whitby - WPA Pool/Getty Images)