The corset is designed by WAIST size,not your bust,please choose your corset according to your WAISTLINE.please check our measurements carefully, These Corsets are adjustable. XXS Waist=50cm Fit Your Natural Waist 50-55cm(20-22"),Underbust=65cm Fit your Natural bust 65-70cm(26-28"); XS Waist=55cm Fit Your Natural Waist