Yves Cupro Slip Dress Goya by Nude Lucy. The Yves Cupro Slip Dress is made from our signature cupro with silky, sandwashed finish. Cut on the bias, this silhouette drapes over the body softly and finishes ankle length. Features include a v neckline with a gathered under bust seam and thin adjustable shoulder straps.Materials: 60% Cupro 40% Viscose