Tatiana Maslany has two nude scenes in Two Lovers and a Bear.
About 25 minutes in, Tatiana shows her breasts while having sex in bed with Dane DeHaan’s character. Long scene.
Then about 50 minutes in, Tatiana has another sex scene during a conjugal visit with DeHaan’s character. Brief shot of her butt as they get undressed and then both breasts with her shirt open. Long scene. Lingering shots of her breasts as they lie on the floor together afterwards.