Mitzi Gaynor (born September 4, 1931) is an American actress, singer, and dancer.Gaynor was born as Francesca Marlene de Czanyi von Gerber in Chicago to Pauline Fisher, a dancer, and Henry von Gerber, a violinist, cellist, and music director. After her father remarried, she became step-sister to anti-war activist Donald W. Duncan.