London, England. 22nd March 1956. Queen Elizabeth II accompanied by the Queen Mother, Princess Margaret and Lord Waverley attended a gala performance by the Sadler+s Wells Ballet at Covent Garden. [Getty Images]

London, England, 22nd March 1956, Queen Elizabeth II accompanied by the Queen Mother, Princess Margaret and Lord Waverley attended a gala performance by the Sadler's Wells Ballet at Covent Garden (Photo by Popperfoto via Getty Images/Getty Images) — see more

London, England, 22nd March 1956, Queen Elizabeth II accompanied by the Queen Mother, Princess Margaret and Lord Waverley attended a gala performance by the Sadler's Wells Ballet at Covent Garden (Photo by Popperfoto via Getty Images/Getty Images)