Oopsy daisy. When you're dolled up to the nines on the red carpet, the very last thing you want to happen is for somebody to step on your dress. Especially when that someone is a fellow A-lister. Madonna must be very embarrassed of standing on Jessica Biel's lovely Valentino dress.Actually, she probably isn't. She is Madonna after all, which kind of gives her the right to step on any one of us/our dresses.