But Mom! I can’t go into the dressing room and try bras on! Someone is going to see that I am a boy.
Listen sweetie, no one is going to know. As far as they know, you are the prettiest teen girl in here Now, listen to your mother, you are going in there with me and I am going to fit you with the right bra. We are then going to try on some pretty dresses. Now, be a good girl and come along.