Britain's Prince Philip, Duke of Edinburgh reacts as he talks with Britain's Prince Harry, Duke of Sussex as they leave St George's Chapel in Windsor Castle, Windsor, west of London, on May 18, 2019, after the wedding of Lady Gabriella Windsor and Thomas Kingston. - Lady Gabriella, is the daughter of Prince and Princess Michael of Kent. Prince Michael, is the Queen Elizabeth II's cousin. (Photo by Steve Parsons / POOL / AFP)        (Photo credit should read STEVE PARSONS/AFP via Getty Images)