Gorgeous ball/prom gown

This dress is truly one of a kind. Check out the detail and gems in the pictures! One strap. Mermaid style. Bought to wear to a navy ball but corona happened so its never been worn. Somehow got make up or tan cream on the inside but you cant see it. Its in the last picture. I paid 460$ for it at a shop with no returns. Its a size 10 but fits more like an 8 because i am a size 6-8.