Fun on a Weekend(1947)

Shy, destitute Peter Porter meets equally impoverished Nancy Crane at a Florida beach. Inspired by Peter's belief that a person can acquire wealth simply by creating an aura of success, the outgoing Nancy convinces Peter to join her in impersonating a confident and eccentric wealthy couple. The experiment works, and the couple secure a stunning wardrobe and a lavish room at a resort. Peter panics, however, when he gets a fantastic job offer.