More Details Halston Heritage Belted Flounce-Hem Dress Details Halston Heritage faille cocktail dress. Approx. measurements: 28"L center back to hem, 28"L center front to hem. Square neckline. Sleeveless; adjustable, thin straps. Belted waist. Dropped wait. Flounce hem. Cotton/silk. Lining, polyester. Dry clean. Imported.