Rainbow Gradient Cocktail Dress. DESCRIPTION. The Rainbow Gradient Cocktail Dress is a sleeveless design crafted from silk crepe fabric, featuring three layers of the season`s rainbow gradient print that represent the rich exchanges between cultural disciplines in African art, music and film. Complete with halter neckline and drawstring closure. Shaded silk crepe fabric. 100% silk. Multicolored rainbow gradient. Specialized dry cleaning only. Made in the UK. ID WS24DR10701. Material: SILK. Made in: IT.