This is a very soft ribbed material. Can button all the way down or leave bottom button open and tie like shown. Fit is nice and flowy. Professional model and Sara are wearing a size small. 95% Polyester 5% Spandex
Small - 2/4
Medium - 6/8
Large - 10/12
XL - 14/16
XXL - 18/20
XXXL - 22/24