Here's a gorgeous long backless halter prom dress with dramatic details. With a deep v neckline, this long formal dress has halter straps that attach above the open back for a sexy vibe with every Asymmetric Backless Halter Dress Atomicfield Embellished Long Sleeve Backless Maxi Dress in White 4 Oh Polly Blue Slip Dress, Blue Maxi Slip Dress, Maxi Slip Dress, Maxi Slip, Slip Dress, Backless Dresses, Silk Backless Dress, Open Back Silk Dress Etsy Jessica Angel Halter Long Formal Dress 846 Blush Xs Black Satin Mermaid Evening Dress Backless Halter Sleeveless Formal Prom Gown Floor Length with Ruffles from Dhgate Evening Dresses price 100.5