Rip her clothes off

As his two sons held down his stepdaughter he grabbed a hold of the top of her dress. "I will see what is under your pretty little dress." With that he ripped hard and it easily tore, with a few more yanks the dress was thrown on the floor and she was exposed to all three pairs of eyes.

"Ah, you are a beauty. Breasts high and full with pale pink nipples. I wonder have those nipples...