De Niro's character as a kid (Scott Tiler) spies on a young Deborah (Jennifer Connelly) practising ballet. When she finishes she strips off, although you only see her from behind. Margherita Pace doubles as Jennifer's character for this scene.
Lea (Catherine Faucher), wearing a dress, takes off her underwear and bends over, allowing Leon (Antoine L'Ecuyer) to check out her behind (not shown to the camera).