Black velvet, floor length maxi dress featuring a sweetheart neckline, two large rear vent and concealed zip fastening at the rear. Vivienne Westwood velvet dress has a detachable outer layer which fits across the front of the dress, tying around the waist and creating a high neckline and ruffled front. This dress fits true to size. Main: 99% cotton, 1% elastane. Other: 69% acetate, 3% silk. Dry clean only.