Theory Stretchy Colorblock Bodycon Dress

EUC (worn once)! Theory colorblock Bodycon dress. High quality thick stretchy material (unlined), zippers up back. Dark blue with flattering black color locking on sides. No size or materials tag. Feels like a soft brushed stretchy cotton/spandex blend. See pictures for (I stretched) measurements and tags. I wear a 4-6 in Theory and fits nicely.