J. Crew Sweetheart Tank Maxi Dress Poplin A Line Skirt Natural CA647 XXS NWT. Excellent condition, no flaws. A sophisticated, new style with the best of both worlds. The top half has a touch of stretch and comes with a flattering sweetheart neckline, while the bottom half is swingy, subtly flared and crafted from crisp cotton poplin. 95% cotton/5% elastane. Built-in bra. Machine wash. Item CA647. Fits TRUE TO SIZE based on 76 customer reviews A-line silhouette. Falls above ankle, 52" from high point of shoulder" 0399