Princess Margarethe of Denmark with her father King Frederick IX waving to crowds on her wedding day in Copenhagen on 10th June 1967. (Photo by Ray Bellisario/Popperfoto via Getty Images/Getty Images)
Princess Margarethe of Denmark with her father King Frederick IX waving to crowds on her wedding day in Copenhagen on 10th June 1967. (Photo by Ray Bellisario/Popperfoto via Getty Images/Getty Images)