BeBop geometric patterned sheath dress A36

Geometric patterned sheath dress by BeBop. Good used condition. Inside of bottom hem is starting to fray, but not noticeable from the outside (last picture). A couple loose threads and usual wear. 7" zipper down back. Sleeveless. Arm holes measure 7.5". Small slits on bottom are 3". Tag says size small. Not very stretchy material, so I'd go with an extra small to be safe. Measurments while flat: chest, pit to pit: 18". Waist: 17.5". Length, pit to bottom: 22.75". Bottom: 20.25".