Wilma Cox doesn't want to spend any of Charley Chase's money on designer dresses, despite her mother, Zeffie Tillbury telling her Charley can afford it, and would like it. Certainly her twin sister, also played by Miss Cox, dresses well. So she has her modiste run up a slinky dress for her, and Charley thinks she's her sister. She takes advantage of this to try to seduce him.
It's certainly not the first time that film comedies made use of this sort of farcical situation, of married couples attempting to cheat on each other with their own spouses. D. W. Griffith played the part against hs real wife, Linda Arvidson, in 1908's AT THE FRENCH BALL, and it forms a major component of Chase's classic silent comedy, MIGHTY LIKE A MOOSE. It's handled very nicely here, too.
It's certainly not the first time that film comedies made use of this sort of farcical situation, of married couples attempting to cheat on each other with their own spouses. D. W. Griffith played the part against hs real wife, Linda Arvidson, in 1908's AT THE FRENCH BALL, and it forms a major component of Chase's classic silent comedy, MIGHTY LIKE A MOOSE. It's handled very nicely here, too.