Are You There God? It's Me, Margaret.

Raised by a Christian mother (Rachel McAdams) and a Jewish father (Benny Safdie), 11-year-old Margaret (Abby Ryder Fortson) has to deal with navigating adolescence and finding new friends when they move from the city to the suburbs.

She makes a new friend named Nancy (Elle Graham), who invites her to join her secret club, but then finds out that if she wants to be a member, she has to wear a bra. Margaret works up her courage to ask her mother for one, only to be asked if she really needs one.

Based on the bestselling children's novel of the same name by Judy Blume.