Selling my wedding dress, size 8,
I am 5' 3" and 135-140lbs for reference. It does have a corset back, so it will fit a range of sizes.
It was worn just on my wedding day in June for 5 hours, and was immediately removed after pictures, and never got dirty. It has since been cleaned regardless.
It has a sweetheart neckline and it is a mermaid fit. There is a bustle on the back with 5 buttons to keep the dress from dragging.