Spaghetti Strap Lace Mermaid Dress

Got this dress from a small boutique a while back ago so I don’t have any tags or much details on who, what, etc. You can make a judgment of what type of dress it is by the pictures. Size XS in black!!! Literally worn for a couple of hours. All my dresses have only been worn once. Also, my dresses are all cleaned and look brand new.