Her Fatal Millions(1923)

Mary Bishop, a clerk in a jewelry store, finds out that her ex-boyfriend Fred Garrison, who left town to make his fortune, is coming back and wants to see her. Having heard that Fred has married a wealthy society girl and is quite rich, Mary borrows some jewelry from the store, dresses up in her finest and when she sees Fred, tells him that she has married the richest man in town and is now quite well-off. Complications ensue.