Vintage 50s Nina Ricci Boutique evening dress.
Tailored halter bodice with hook neckline and bow.
Gathered and fitted waist with long draped skirt.
Black aceteate/blend? material.
Dress zips up the back and is lined. 

size estimate: S
shoulders: -
bust: 32"
waist: 24"
hips: 46"
total length: 56.5"

Model is 5'9" and measures 32" bust, 25" waist, 34" hips.
Belts/accessories are not included unless noted in the description.