Early in Tanner Hall, Brie Larson (from The United States of Tara) fakes an injury in the girls’ showers so her teacher can come help. Unfortunately, Brie is wearing a towel but as the teacher storms to her rescue, we see lots of other uncredited girls nude.
Around 50 minutes into the film, the teacher sees Brie walking in the rain and starts fantasizing about her. Brie is shown wearing only panties while dancing in the rain but her hair and arm block her nipples from being shown.
A few minutes after that scene, Georgia King and Amy Ferguson take a bath together but again nothing is really shown.