Light Gray Vest with Plaid / Grid Pattern - Size Small Medium Womens

This is a light grey vest with a subtle white grid / plaid pattern on it. There are darts along the chest to accommodate bust size. The tag says Medium but it fits like a Small/Medium. Measurements (approx) Pit-to-pit: 17 inches Waist: 16 inches Length (mid-shoulder to hem): 21.5 inches