Light weight knit dress with side slit

I ordered this from a local boutique but it is also online through their app called Southern Cuties. I never wore it only tried on but changed my mind and couldn’t get a full refund do decided to sell it. It fits fine but I don’t have the right type of bra to wear with it because it has a cutout w/tie in the back. Size medium but is very fitted. It’s new but did not have tags, just can’t put that in the description box.