Reformation Peridot Side Slit Midi Dress in Mademoiselle - Size 4

Copied from site; A strappy cut and a serious slit serve up sassy style in a dress that thrills all night long. Back zip closure. Sweetheart Neckline I bought this dress years ago from Poshmark and it never fit! Tag says 4, but I think it fits more like a 2. It's been a couple years since I've been a four, so who knows lol