There is an extended sequence near the end in which a woman is taken over by the spirit of ancient warrior. Her clothing is completely removed, but her body is obscured by mist and mud at various points, although there is some rear nudity and you can make out general shapes.

Tony Stark invites many women over to his apartment. Female rear nudity seen

A party takes place at Stark Tower. Tony enters a bathroom, where it is implied that a couple is having sex. Moaning and thrusting sounds are heard

Brief full frontal female nudity: Pepper Pots and Tony Stark lie naked in bed together. Tony has his fingers just below Pepper's vulva, so her pubic hair is seen.