Tony Curtis and his daughter Kelly on the set of Some Like It Hot, 1959

By the way when Tony Curtis and Jack Lemmon first dressed as women, they decided to walk around the Goldwyn Studios and check if they could pass as female. They tried using mirrors in public ladies rooms to fix makeup, and when none of the women using it noticed something was wrong, they understood that they could be convincing as women. There is a scene on the train recreating this moment.