i cant type in chinese so have someone translate this for you if you dont understand what im sayin. you're NOT suppose to wear metal-wired bras when youre going through puberty cus that will keep you away from growin, not holdin it in shape like the previous response have said. yes it will hold the shape but like i said it will stop growin, you're suppose to wear the plastic-wired if yours are kinna big already, but if not you should wear the stretchy ones (kinna like sports bra) the pre-development bras to give space for yours to grow. but dont get confused frmo what i said, WEAR PLASTIC WIRED OR SPORTS BRA LIKE (but not the sports bras)