Cute boxy short sleeved button up shirt

This is adorable vintage! Marked large but would fit a small or medium/ cute boxy fit! Front pocket, semi fitted (see seams near pits) and cute diagonal cut at bottom and chest. White, green and red! 63% cotton, 35% polyester, 2 spandex. Great texture. Excellent condition- looks unworn honestly. Would keep but not my favorite colors and I have too many boxy button downs. 22.5 inches pit to pit