Scrambled Weddings(1928)

Edward Everett Horton and Ruth Dwyer are in love and expect to get married as soon as one of them mentions it to the other. In the meantime, Lolita Lee accepts Horton's proposal, which he doesn't recall making, and Miss Dwyer is invited to be a bridesmaid. So he tells Miss Dwyer that it's Stanley Taylor she's marrying, and hopes no one spills the beans before Taylor shows up in a false beard to spike the proceedings.