Corpse Bride corset dress

I literally just got this an hour ago for a Xmas gift from my aunt. I came home and tried it on and it was way too big on me. Unfortunately, it's been over 30 days since she bought it and can not return it or exchange the size. It's brand new still in the bag and will all tags. Size 3x Corpse Bride Hot Topic Brand new with tags This size is sold out on the website I'm sorry but price is firm so we can get the money back. It's a beautiful dress, and I hope someone can get use out of it. 🥺