It's Asian size,please check the detail sizer on the size chart image.
Specifications: * 100% Brand New. * The accessories photographed not included. * Use similar clothing to compare with the size. * Choose larger sizes if your size are same as the flat measurement Size chart. * Measurement: * Asian S(US XS(4) UK 6 EU 34 AU 8)--------Bust 75-80 cm/29.3-31.2 inch----Tops Waist 64 cm/25 inch------Tops Length 30 cm/11.7 inch----Skirt waist 58-78 cm/22.6-30.4 inch----Skirt length 40 cm/15.6 inch * Asian M(US S(6) UK 8 EU 36 AU 10)--------Bust 76-85 cm/29.6-33.2 inch----Tops Waist 65 cm/25.4 inch----Tops Length 31 cm/12.1 inch----Skirt waist 62-80 cm/24.2-31.2 inch----Skirt length 40.5 cm/15.8 inch * Asian L(US M(8-10) UK 10 EU 38 AU 12)----Bust 77-90 cm/30-35.1 inch------Tops Waist 66 cm/25.7 inch----Tops Length 32 cm/12.5 inch----Skirt waist 64-84 cm/25-32.8 inch----Skirt length 41 cm/16 inch * Asian XL(US L(12) UK 14 EU 42 AU 16)-----Bust 79-95 cm/30.8-37.1 inch----Tops Waist 67 cm/26.1 inch----Tops Length 32.5 cm/12.7 inch--Skirt waist 66-88 cm/25.7-34.3 inch----Skirt length 41.5 cm/16.2 inch