Dress size A: size 2=size 4= size 6  are same dress: Bust range 72cm~ 90cm;  Waist range 64cm~80cm. Dress bigger size B : size 8=size 10= size 12  are same dress: Bust range 90cm~ 100cm;  Waist range 80cm~90cm. Size Chart: dress has built-in bra, you don't need to wear your casual bra when you wear it. Bust: You don't need to wear your casual bra when you measure your bust size. Fashion Design: elastic back, has a zipper on the side. Length about 75cm