X by NBD Jack Dress in Yellow. - size L (also in XS) X by NBD Jack Dress in Yellow. - size L (also in XS) Self & Lining: 100% poly. Dry clean only. Fully lined. Adjustable halter style neckline. Sequin embellishments throughout. Hidden back zipper closure. Imported. XBYR-WD301. XNDR291 F17. With sexy silhouettes and daring cut-outs, X by NBD is the party girls go-to brand for the perfect dress. With lace overlay details, plunging necklines and sweet scalloped edges, X by NBD gives a modern makeover to cocktail dresses.