Two Blondes and a Redhead (1947)

Chorus Girls Smash Blackmail Plot!

Socialite Cathy Abbott is working in the chorus of a Broadway show instead of being enrolled at an exclusive girl's school as her parents think. When the show closes, she brings two of her chorus friends home with her. In addition to trying to make her friends acceptable to the snooty society of which her family is part, she is also being blackmailed by a rival.