Pardon My French (1921)

A traveling theatrical troupe is stranded in a small town, and the leading ingenue, Polly, returns to her New York City hometown broke. She and her friend Bunny, desperate for a job, convince the Hawkers, a "nouveau riche" family from Kansas, that they are French and an experienced maid-and-butler team. Young Zeke Hawker is smitten with Polly, but Polly is attracted to their neighbor, a famous actor named MacGillicuddy. One night at a swanky party given by Mrs. Hawker, her jewels wind up stolen, and Polly is suspected of it. Complications ensue until Polly discovers who the real thieves are.