Near the beginning of Paint It Black, Alia Shawkat is posing nude for an art class. Alia is sitting on a stool and facing to the left so we see the top half of her ass. Unfortunately, Alia’s arm is blocking most of her left breast from view.
At 38 minutes, Alia is posing again and we see the top half of her right breast from the side briefly but no nipple.
And finally at 51 minutes, Alia is naked from behind as she walks away from the camera but you can’t really make out much since the scene is dark, shadowy, and edited weird.