Prom dress

Brand new La femme prom dress size 6. Purchased this a few weeks ago in hopes to wear it to prom but it doesn’t fit my bust how I’d like it to (I’m a 34DD so anything smaller should be fine). It still has the tags and dress bag. Purchased for over 300 dollars so I’d like to try and get some of my money back for a new dress! I honestly love this dress but just didn’t work for me! Material is great quality!!