Monroe returned to Hollywood in July 1958 to play the female lead, singer Sugar Kane, in Billy Wilder's comedy Some Like It Hot, about two men (Jack Lemmon and Tony Curtis) who dress as women and join her all-female orchestra after needing to go into hiding after witnessing the Valentine's Day Massacre. In the film, she performed one of her most famous songs, "I Wanna Be Loved by You". The difficulties of the film's production have since become "legendary".