Why Change Your Wife? is a 1920 comedy film directed by Cecil B. DeMille.
Frumpy wife Beth devotes herself to bettering her husband's mind and expanding his appreciation for the finer things in life, such as classical music. When he goes shopping at a lingerie store to buy some sexier clothes for her, he meets Sally, the shop girl. Rejected by his wife for a night out on the town, he takes Sally, who douses him with her perfume. When Beth smells another woman's perfume, she kicks him out and files for divorce.
Beth's Aunt Kate takes her shopping to get her mind off of her broken heart. While in the dress shop, Beth overhears women gossiping about how her dull appearance led to her losing her husband. She determines to "play their game" and gets a new "indecent" wardrobe. Meanwhile the manipulative Sally convinces the dejected Richard to marry her. He finds that his second wife annoys him as much as his previous one.
Later the couple and their dog end up at the same luxury hotel where...