Notice: Bikinis has good flexibility, this size chart only for your reference, please allow 1-2cm differs measurement. Bust: This is not bra size, wear an unpadded bra (your dress will have a built-in bra) Relax arm at sides pull tape across the fullest part of the bust. Waist: Find the natural waist, this is the smallest part of the waist, usually about 1 inch above belly button. Hip: Find the widest part of the hips, usually about 7 inch below natural waist, tape should accross toth hipbones.