Satin Halter Evening Dress by Sean Collection (448) Polyester Sizes run small. Check your measurements against the Formal Gallery size chart posted with product images. XXS=0, XS=2, S=4, M=6, L=8, XL=10 Do not use the Amazon Standard Size Chart to determine fit Stretch charmeuse with rhinestone detail; Rayon Lining Front slit; Built-in bra pad; Dry Clean Only; Imported Perfect for evening, social occasion