I’m in love with Derek tube mini dress

Black mini tube dress by I’m in love with Derek. 95% polyester 5% spandex Has stretch. Herringbone lines across fabric. Elastic back, waist and torso sides. Labeled a size medium. Suggest a small. Modeled on size small form. Please refer to measurements laying flat for desired fit. Pit to pit 12”-14” Waist 12”-14” Hips 24” Length pit to hem 27”