Roberto Cavalli Justcavalli cocktail dress size 38

Roberto Cavalli Just cavalli Black and gold dress size 38 (size 2-4/ XS-S) and worn just 2 or 3 times. Sleek satiny dress designed with a square neckline. Style has been seen on Kim Kardashian. Too tight on me now. Probably was more than 600 but that’s a confident original price as I cannot find a similar dress online!! RARE? I’ve listed but please just submit your best offer!! It’s being wasted just sitting in my closet :(