Sparkly sequin patterns make this long black formal dress polished posh for your special-occasion event. With a nude lining, this gorgeous long designer dress from Colette for Mon Cheri, style number CL2035, has a black sequin pattern on a sheer tulle overlay for a sparkly look at prom, fancy galas, and other black-tie events. The long black evening gown includes black sequin shoulder straps that criss cross the open back, while sheer insets at the sides provide a sexy vibe. Offered in misses and extended sizes, this sequin-print long black formal dress smooths over the hips before opening in a side slit to add to the vibe and complete the look.