Princess Margaretha of Sweden (1899 - 1977) (left) and Prince Axel of Denmark (1888 - 1964) (right) accompany Princess Irene of the Netherlands at a banquet given by the Belgian government at the Royal Palace of Brussels, 14th December 1960. The banquet is taking place for the guests who will be attending the wedding of King Baudouin of Belgium and Dona Fabiola de Mora y Aragon the following day. (Photo by Central Press/Hulton Archive/Getty Images)

Princess Margaretha of Sweden (1899 - 1977) (left) and Prince Axel of Denmark (1888 - 1964) (right) accompany Princess Irene of the Netherlands at a banquet given by the Belgian government at the Royal Palace of Brussels, 14th December 1960. The banquet is taking place for the guests who will be attending the wedding of King Baudouin of Belgium and Dona Fabiola de Mora y Aragon the following day. (Photo by Central Press/Hulton Archive/Getty Images)