NOTICE: The swimsuit has good flexibility.Size is for reference only.Swimsuit size is different from your undergarment size. Please allow 1-2cm differs due to manual measurement. HOW TO MEASURE: Bust: Relax arm at sides.Measure the circumference around the bust at the fullest point. Waist: Measure across the waist at the smallest point.keep tape slightly loose to allow for breathing room. Hips: Stand up straight with feet together.Measure around the widest part of the hips.