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. Friendly Reminder The size chart is only for reference, because it is impossible to meet everyone's bodily form needs. If you usually wear underwear size M. If you are worried about the smaller size of the swimsuit, please choose the larger size L. If you are worried about the larger size of the swimsuit,please choose the smaller size S. Use this method to calculate the size of L, XL, 2XL, 3XL. Choose the right swimsuit. Note 1: 1 inch = 2.54 cm,1cm = 0.39 inch. Note 2: There might be slightly difference in color, because of the computer monitor settings. Note 3: With the difference in the measurement method,please allow 1-2 cm in size deviation. Note 4: If you don't know how to choose size,you can leave message about your waist and chest measurement.please feel free to