MUSTIQUE - JANUARY 01: Princess Margaret shows her sister, Queen Elizabeth ll around the island during the Queen and Prince Philip's visit to Mustique in 1977 in Mustique. (Photo Anwar Hussein/Getty Images).
MUSTIQUE - JANUARY 01: Princess Margaret shows her sister, Queen Elizabeth ll around the island during the Queen and Prince Philip's visit to Mustique in 1977 in Mustique. (Photo Anwar Hussein/Getty Images).