Lace Halter Black Gown With Open Back Gem Black Backless Formal Dress Halter Sheath Column Open Back Ankle Length Formal Dress Backless Formal Dresses, Stunning Open Back Evening Gowns VQ Dresses Luxe Draped Open Back Halter Formal Party Evening Dress. Experience elegance and sophistication in our Black Halter Sheath Column Formal Dress. The classic black halter neckline and open back add modern detailing to the ankle length silhouette. Perfect for any formal event, this dress will turn heads and make a lasting impression.