Hello/AssalamAlaikum! Find more great new arrival items in our Store - WOWDECOR Warm Tips: ~ We use the Int'l Clothing Size Chart as below. Fabrics have a certain flexibility, and due to manual measurement, please allow 0.5 inch difference. ~ We recommend you choose the bigger size when your bust and waist is in different size. If you want to make sure the modest way, you might consider a bit bigger. But that's just our advice, you should decide for yourself! ~ Please check the size chart carefully! If you have any questions, feel free to contact us via buyer messages. Int'l Clothing Size Chart (Length Unit: cm) 1 inch = 2.54 cm Tag S Bust: 62, Waist: 64, Fit Height: 90-110 Tag M Bust: 66, Waist: 68, Fit Height: 100-130 Tag L Bust: 70, Waist: 72, Fit Height: 120-145 Tag XL Bust: 74, Waist: 76, Fit Height: 135-160 Our M & M line offers Modest or Muslim swimwear for all.