Vintage Pennylane Rainbow Striped Shirt

Vintage Pennylane Rainbow Striped Shirt. In good vintage condition - 2 small (quarter size) bleach spot on back of right sleeve. No size on the tag, but I would estimate a size medium. Measurements (approximate, made with item flat) Shoulder to shoulder: 22” Armpit to armpit: 21.5” Sleeve length: 8” Shoulder to bottom hem: 25.5”