Halston Heritage Black One Shoulder Dress

Halston Heritage black one shoulder dress with side zipper. On the shoulder hangs a gold "Halston" hook. Long slit up the leg. For some reason there is no size tag or fabric tag. From the size chart (pictured) this looks to be a size 0, but please see measurements. Approximate measurements laid flat: 50.5in shoulder to the long side hem 20.5in from the left armpit to the top of the highest point 15in pit to pit Stretchy!