Judy Kaye (Lily Garland/Mildred Plotka), Rock Hudson (Oscar Jaffee), Imogene Coca (Letitia Peabody Primrose), Patrick Quinn (Bruce Granit), Dean Dittman (Oliver Webb), Lee Goodman (Owen O'Malley), Maris Clement (Imelda Thornton), Tom Batten (Conductor Flanagan), Michael Connolly (Max Jacobs), Margarette Chisholm (Dr. Johnson), Leslie Easterbrook (Agnes), Hal Norman (Congressman Lockwood)