You Can't Take It With You
From Wikipedia:
You Can't Take It with You is a 1938 American romantic comedy film directed by Frank Capra, and starring Jean Arthur, Lionel Barrymore, James Stewart and Edward Arnold. Adapted from the Pulitzer Prize-winning play of the same name by George S. Kaufman and Moss Hart, the film is about a man from a family of rich snobs who becomes engaged to a woman from a good-natured but decidedly eccentric family.