Lush Black sleeveless dress open back

Brand Lush, Size M. Black and fully lined with racerback-like neck. Back is subtly open from waist to two buttons at neck. Elastic waist and flowy light fabric. Sleeveless. Beautiful dress! Worn a few times, no known flaws. Approximate Measurements (laying flat, unstretched): Pit to pit: 17” Length: 33”