Bodycon grey maxi dress with slit

I got this from tjmaxx a while ago, I never actually wore it. Very formfitting and flattering. Runching around the waist. Scoop neck, slit on one leg only. The tag came off when I was taking off the store tag, but it's a size small (not sure about brand but i did get it from tjmaxx and it was over $40, and it was brand name)