NWT Club Monaco Black Button Belted Mini Dress. A dress that does double duty. This throw-on-and-go dress transitions from workwear to day off with ease. A little black from a polished Ponte for all-day comfort, with a self-belt that cinches the natural waist for elegant appeal. 61% Viscose, 34% Nylon, 5% Elastane. NWT. Size XLarge.