Lululemon Like New Size tag can not be located so I am listing this as a Medium but I would say it would be an oversized medium Measurements to improve understanding of size Across bottom: 18in Pit to Pit: 20in Bottom of Collar to Bottom of Shirt: 22in Pit to Wrist: 17in Loose fitting at top and narrowing toward waist Very Lightweight Areas of Sheer part of design Back has wrap style with open at upper back Color is Light with blue/purple hue No stains or tears - great condition