This Amazing, Body-Hugging COS Dress in Cobalt Blue is a reinvention of the classic T-shirt dress. It is crafted from soft stretch-cotton jersey and gathered along one side, cinching the waist and creating an asymmetric hem. Size XS. Runs true to size; shown in my XS/Size 2 dress form. Ties on the side. 91% Cotton/9% Elastane. Made in Portugal. Like New Condition!