Dominique Sanda and Jean-Louis Trintignant

>Bertolucci originally intended to cast Dominique Sanda, who developed the idea with him, and Jean-Louis Trintignant. Trintignant refused and, when Brando accepted, Sanda was pregnant and decided not to do the film

That would have been interesting to see. It might have even been better film. Dominique Sanda is much sexier than Maria Schneider and Jean-Louis Trintignant is always great.