On top of it. Shop the Arwen Knit Top, a sustainable top from Reformation. Fior Di Latte. Designed to be fitted throughout. The model is wearing a size XS and is 5'8", 23" waist, 35.5" hips, 30" bust. non-adjustable straps. Cotton Cinch is a lighter weight stretch fabric with a soft handfeel made with 88% organic cotton, 12% spandex. Machine wash cold, do not bleach, tumble dry low, do not iron, do not dry clean.