Continuity: We see Sarah Jessica Parker well-dressed in red without a bra. When Bruce Willis remove her red robe, she's wearing a bra.

Factual error: During the beginning car chase, they are chasing a car on Bigalow Blvd. less than a mile from downtown Pittsburgh and we see a big, brick hill they chase down. This hill is actually in Duquesne, PA more than ten miles south east of Pittsburgh. Then as your watching they are still in the same area as Bigalow Blvd. in the Polish Hill section of Pittsburgh.