Cute and Chic bodysuit

I purchased this and it's too small, tag says 1XL but it fits more like a Med/LG. I can't return it because it was a final sale. The description below was taken directly from the website. All Over Me Bodysuit - Black/White Available In Black/White Stripe Victorian Neckline Bell Sleeves Bikini Bottom Snap Closure Self: 100% Polyester Contrast: 90% Polyester 10% Spandex Imported