The Sundance Halter Denim Dress in Railway Blue from our High Summer 2026 Collection. A denim midi dress featuring a halter neck with a back necktie, draped waist detailing and a heavily gathered skirt with a high-low hem.denim-cotton fabric, sleeveless, midi-length dress, halter necktie, gathered at the waist with draped side tie, deep open back, invisible zip at the left side, heavily gathered skirt, high-low hem