Want to make it even sexier? Have the skirt just blow up on her left side (so the breeze affects the skirt the same way as her hair, making it seem more natural), AND make her panties a DIFFERENT color from the top of her costume. That way, it doesn't look like she's wearing a leotard with a skirt around it but, rather, the top will seem connected to the skirt, and the undies are removable! :)