Revealing mistake: In one scene, focused only on an actress's hand holding a lit cigarette, it dawns on you that the smoke is curling back downwards and the cigarette is miraculously getting longer. This is a flipped shot, it is seen backwards.
Lillian: Hemingway, huh?
Sammy: Yes. Hemingway and Cocteau and his red necktie and the crème de la crème.
Dottie: Way down deep, he's very superficial.