Navy blue 2 piece prom dress!

Gorgeous navy blue dress with a lace detail on the back that has a gold zipper and 2 buttons (shown in third pic). There is a decently big slit on the skirt that was hemmed to make smaller and more modest by a half inch. It was only worn once and has no flaws. Says size 0 but can easily fit a 2-4 I was a 2 when I bought this and it for great I’m now around a 4 and is slightly snug but still fits! Willing to negotiate!! Says Sherri hill so more people see it but the real brand is B Darlin