Swing Out, Sister

Swing Out, Sister is a 1945 American musical comedy film directed by Edward C. Lilley and starring Arthur Treacher, Rod Cameron and Billie Burke.

Plot
Two people get jobs anonymously at a jazz club without telling their upper-class families.

Cast

 * Rod Cameron as Geoffrey Cabot
 * Billie Burke as Jessica Mariman
 * Arthur Treacher as Chumley
 * Frances Raeburn as Penelope Mariman / "Donna Leslie"
 * Jacqueline deWit as Pat Cameron
 * Samuel S. Hinds as Rufus Mariman
 * Fuzzy Knight as Clutch
 * Milburn Stone as Tim Colby

Cultural reference
The English pop duo Swing Out Sister took its name from the film.