Size S is suitable for your weight about 45kg; Size M is suitable for your weight about 50kg;Size L is suitable for your weight about 55kgSize XL is suitable for your weight about 60kg;Size XXL is suitable for your weight about 65kg NOTE Please choose the size carefully ,If you not sure the size,You can leave your measurement information(weight, height,bust, waist, hips)when you placing an order,that we can help you to choose the right size.thank you!!!