Size-18 purple prom shop dress

Product Name: Size-18 purple prom shop dress
Size 18 formal ball gown. Worn for a few hours for my sister's prom. Still in great condition there's a small stain on the inside of the dress shop as I pointed out. It has the bra band to help keep the dress up along with a corset back to tie yourself in and a modesty panel. I have the corset on the tightee side-there's quite a bit of give it would probably fit up to a size 22. I looked the outside of the dress over I didn't see any snags or rips. It has been packaged in a large flat box so it shouldn't get super wrinkly it's only folded over once at the corset waste.