In this photo provided by the John F. Kennedy Presidential Library and Museum, dated May 19, 1962, actress Marilyn Monroe sings "Happy Birthday" to President John F. Kennedy at his 45th birthday celebration at New York's Madison Square Garden. (Associated Press)
Marilyn Monroe is seen wearing the iconic gown from President Kennedy's birthday fundraiser during a reception in New York City. Standing next to Monroe is Steve Smith, President Kennedy's brother-in-law. This photo is provided by the John F. Kennedy Presidential Library and Museum. (Associated Press)