Smythe Elastic Strap Camisole in Violet, size XS. Quite a bit of wiggle room in this one - as it's drapey - but let's say like XS/S. About 28 inches in length (2 inches shorter on the side, and about 2 inches longer at the front centre). 100% polyester. Retails for $295USD ($400CAD?), and selling here for $115CAD!
