At a Hollywood Charity Benefit Ball, he-man star Burt Lancaster, assisted by rugged and virile star Robert Mitchum, convulsed the huge audience of Hollywood stars and socialite personalities by doing a "sister act." These two big stars appeared in blonde wigs, false eye lashes, their lips painted a fiery red and wearing similar style blue satin dresses and parasols.
Burt Lancaster and Bob Mitchum amused and amazed the viewers by singing and dancing. They were assisted by the late Errol Flynn as the love-smitten swain, who could not choose between the two "sisters."
Burt and Bob concocted this startling act as their contribution to the gala ball's entertainment program, as all the proceeds went to worthy charities.
— Burt Lancaster, Robert Mitchum, and Errol Flynn perform at the Friars’ Frolic, Shrine Auditorium, Los Angeles, 1950, via Fawcett Publications & Digital Transgender Archive