Get this season's must-have Gatsby-inspired silhouette with this stunning dropped waist dress from Whistles. It has a relaxed shape with a flared skirt, simple sleeveless shape and back zip fastening - the perfect pop of colour for your summer wardrobe. Brand : Whistles. Dress Shape : Shift. Material : 100% Polyester. Neckline : Round Neck. Size : 6. Sleeve : Sleeveless. Washing Instructions : Machine washable.