Gap denim style shift dress

Gap denim style short sleeve shift dress with pockets! Shorter shift dress with front v neck buttons. Dark grayish/black color like a black/gray denim. Cotton and lyocel. Soooo comfortable! Size S but fits like a medium ( I am a true medium or large in gap usually). Near perfect condition, with no noticeable flaws, might just need to be ironed. Worn only a couple of times. Smoke and pet free home. about 19.5" pit to pit?