Easter Parade (1948)

In this lavish musical, Broadway star Don Hewes' (Fred Astaire) dancing partner (Ann Miller) goes solo, and Don declares that he can make a hit performer out of the next dancer he sees. This turns out to be the inexperienced Hannah (Judy Garland), who bristles as Don tries to make her into his old partner. But as he realizes that he is falling in love with Hannah, Don knows that he must let her grow into her own kind of dancer if he wants her to reach her full potential.