Y2K embellished western button up size‎ Small

Y2K embellished western button up size Small. Blue and orange embroidery. Faded black color. Brand is Roar. Back is a little longer and has a zipper at the bottom. Tags says small but it’s looks more like XS so please use measurements. Shoulder to shoulder- 15.5 inches Pit to pit- 18 inches Y2K, embellished, embroidered, western, fitted, button up, rhinestone, bling