Upstage (1926)

Dolly Havens, a small-town girl with big-town ambitions that are larger than her talents, hooks up with Johnny Storm, a vaudeville performer, whose talents make the act a success. Dolly, thinking she is the reason, meets a handsome leading man and joins up with him but, before long, he discovers 'she ain't a trouper' and she is soon performing with 4th-class acts in Tank Town America