This top is a nice, thick material and runs true to size. Your regular size will fit you fine, but this doesn’t run big. Stretchy.
90% Polyester 10% Spandex
The model is in a small.
Small - 0/2-3/4, Medium - 5/6-7/8, Large - 9/10-11/12 XL - 13/14-15/16