Marie (1993)

A little boy watches a naked teen girl fixing her hair in a bathroom mirror. We see her bare back above her waist and side of her right breast. She notices the boy and they smile at each other. It cuts to the next scene where they are naked in a tub together. She's washing his back. Then she kisses him on the cheek and lies back as he turns to face her. We see her breasts during this scene, but only his chest and back because the water is murky from soap.