Polo Ralph Lauren Feather-Trim Satin Cocktail Dress Black new with tags. Delicate ostrich feathers lend dimension and movement to this satin cocktail dress, which is designed in a straight fit and fully lined with crepe. Straight fit. Intended to hit above the knee. Straight neckline. Concealed left-side-seam zipper with a hook-and-eye closure. Spaghetti straps. Bust darts. Feather trim from the lower hips to the hem. Fully lined. Shell and lining 100% polyester. Trim: 100% ostrich feathers.