Dance, Girl, Dance (1933)

Vaudevillian Joe Pitt sweeps young Sally Patter off of her feet and steals the lovestruck girl away from her small-town family to join his act. She winds up heartbroken, pregnant and broke when Joe runs off with the magician's sexy assistant. Sally bravely persists and her immense dancing and singing talent gain the notice of prominent producer, Wade Valentine. Under Valentine's tutelage, she rockets to Broadway stardom while Joe Pitt is reduced to waiting on tables. Alone, Sally proudly gives birth to a baby son. Wade proposes marriage to his beloved protege and it appears that Joe Pitt may never learn about the son he has fathered.