Skims Bralette Size S new without tag, the brand tag missing SKIMS Lace-Trim Fits Everybody Triangle Bralette Size info Use bust measurement (around largest chest section) to determine size. XXS=30-32", XS=32.5-34.5", S=35-37", M=37.5-39.5", L=40-42.5", XL=43-46.5", 2X=47-50.5", 3X=51-53", 4X=53.5-55.5