Black tie sits comfortably at the peak of formality without being too over the top. It's that sweet spot between cocktail attire and the ultra fancy white tie. Think of it as the perfect balance Amazon.com: GORGLITTER Women's Halter Tie Maxi Dresses Elegant Classy Backless Cowl Neck Evening Gowns Formal Cocktail Ruched Dress Black X Small : Clothing, Shoes & Jewelry Xscape Women's Satin Halter Tie Neck Floor Length Dress Leely Women Black Formal Dress with Slit Mermaid Halter Neck with Hook Satin Black Tie Dress Sexy Evening Gown Zapakasa Women Black Halter Neck Long Prom Dress Ruffled Mermaid Formal Dress with Slit Daria Halter Neck Midi Dress Black Wedding Guest Dress Halter Neck Midi Xs (6)