The Backless Midi Dress by Old Sport is made from the thickest, most opaque scuba crepe fabric available. You'll feel secure without needing to be strapped in.
Variable width across the bust allows you to wear the dress open or tape the sides if a bit of cheeky side boob isn't your thing.
Despite how thick the material is, there's still a comfortable amount of stretch.
Model is 5'8" and is wearing a size SMALL
Model measurements - Bust: 84cm/33", Waist: 64cm/25", Hips: 93cm/36.5"