Black Pirate Goth Corset Shirt size M or L

No tags. I'm guessing its a Medium but the material is stretchy. It has slight padding and cupping for breast. Front is more stiff to flatten stomach. I got this at a Renaissance Festival around 2015ish. Wore it a few times for costumes or nice dinners but has been sitting in my closet untouched for at least 6 years. I paid close to $100 originally.