SZ 18 junior or XS womens. Your tween and junior diva is self-conscious and looks do mean a lot at this age. She is is sure to look and feel confident in this classy, midnight blue dress by Elisa B It is very nicely made with cute, solid fabric. Pleated skirt and unique silver neck treatment add that extra finishing touch. Zipper back closure. Fabric 96% polyester, 4% spandex. Pink mesh lining. Hand wash cold.