Adrianna Papell Polka Dot Crepe Sheath Dress (Plus Size). Black polka dots add playful, retro charm to a bright white crepe dress designed to flatter with demure cap sleeves, a lightly draped square neckline, and side-swept pleating that smoothes and defines your waistline. 44 1/2&quot; length (size 18W). Hidden back-zip closure. Draped square neck. Cap sleeves. Slightly stretchy, midweight crepe. Fully lined. 97% polyester, 3% elastane. Dry clean. By Adrianna Papell; imported. Encore.