A good man will always look for a good heart. You have a bf who loves you for what you are, so, who do you wanna look sexier for! And personally i believe, what makes a woman look sexy is her correct attitude. Look at the mirror (well a full lenght mirror would be even more helpfull :D) and learn to respect & accept the person you see. And btw, the most happening girl in our college, was short! Stop listening to stupid songs and be happy. :-) Good luck.