Size Small / US 4 with size guide in listing as photo. Designed to have a relaxed fit throughout. Halter neckline, backless. The model is wearing a size 0 and is 5'11", 23" waist, 35" hips, 28.5" bust. Can do nyc courier, national shipping, and handoffs at my address. If shipping, must be 2 day fedex (no ground) roundtrip.