This is size S but it runs small, fits like XS or even XXS. Very pretty and unique dark purple color. Double lined with very well made seams. Fabric is like new, very good quality sportswear fabric. From website: There's nothing square about this top - other than the neckline. Ready for sweat, perfect for meetings and eager for happy hour. She rolls with the punches. Built in bra, super soft and beyond flattering.