Red and black floral lace faux corset peplum shirt

This lacey floral peplum shirt has a faux corset in the front, which has a black material directly behind it. Looks/feels unworn and practically brand new! Tag says size small but fits more like a medium. Measurements taken laying flat Top of shoulder to end: 25 inches Armpit to armpit: 16 inches Waist: 15 inches