Miss Cleopatra Lewis is about to be launched in society by her aristocratic grandfather. But since she has no intention of marrying, she visits a costume emporium specifically to order unflattering dresses guaranteed to put off any prospective suitors. Powerful and charismatic Jacob Astor Addison is in London... He's furious when a she-devil masquerading as an English lady steals Quimby's Costume Emporium from under his nose. Jake strikes a devil's bargain, offering to design her 'wallflower wardrobe' and giving Cleo the chance to design his... And somehow in the middle of their lively competition, Jake becomes her closest friend.