Easter Parade (1948)

Continuity mistake: In the scene where Judy Garland and Fred Astaire go to the nightclub to see Ann Miller, Ann invites Fred to come up and dance with her. When she is dancing by herself, she is wearing red high heels. When Fred comes up, she is wearing red flats.

Don Hewes: Miss Brown, what idiot ever told you you were a dancer?
Hannah Brown: You did.