All optional sizes are Asian sizes. Please refer to the following data to choose the right size.     If you want to choose your favorite size and color.Just leave a message when you are ordering it.          Bust Lenght Shoulder Waist Size S  33.1  22.9  13.4  28.4  Size M  34.7  23.2  13.8  29.9  Size L  36.2  23.6  14.2  31.5  Size XL  37.8  24.0  14.6  33.1