Stepsister sneakily caught changing and got her big ass fucked - perverted family fantasy

It's the weekend and there's a party coming up. My stepsister has been getting ready in the bathroom for ages. The fact that she leaves the door open is almost an invitation to take a closer look. However, it happens very quickly until she works on me and so one thing leads to another and her big, hot ass kneels naked in front of my cock and is eagerly waiting to be fucked hot and hard before the party. With a pussy covered in cum, the celebration is twice as hot.