Needle & Thread Anthropologie knit dress size Juniors Medium

Needle & Thread sold at Anthropologie black and white geometric fit and flare dress in lightweight stretch knit. Contrast black stripe down front bodice. Flare skirt and sleeveless. Size Medium, but appears very small, please check measurements. This dress is in good pre owned condition with some signs of wear and no apparent flaws. Approximate measurements: Pit to pit 15 1/2” Across waist 12 1/2” Length from waist 16”