"You Must Have Been a Beautiful Baby" is a popular song with music by Harry Warren and lyrics by Johnny Mercer, written in 1938 for the Warner Brothers movie Hard to Get, released November 1938, in which it was sung by Dick Powell.

Hard to Get is a 1938 American romantic comedy film starring Dick Powell and Olivia de Havilland. Written by Jerry Wald, Maurice Leo, and Richard Macaulay, and directed by Ray Enright, the film is about a spoiled young heiress who tries to charge some gasoline at an auto court and is forced by the attendant to work out her bill by making beds and cleaning rooms. Resolving to get even, she pretends to have forgiven him, and then sends him to her father to get financing for his plan to develop a string of auto courts across the country, knowing he will only be wasting his time. Hard to Get was released by Warner Bros. Pictures in the United States on November 5, 1938.