Princess Lee Radziwill, sister of Jacqueline Kennedy, with her children Anthony and Anna Christina arriving for the Children's Dancing Matinee at the Shaftesbury Theatre, London, July 9th 1965. (Photo by George Freston/Fox Photos/Getty Images)
Princess Lee Radziwill, sister of Jacqueline Kennedy, with her children Anthony and Anna Christina arriving for the Children's Dancing Matinee at the Shaftesbury Theatre, London, July 9th 1965. (Photo by George Freston/Fox Photos/Getty Images)