Backless Lace Black Maxi Dress

NWT. Backless Lace Top Black Maxi Dress. Cap sleeves. Scalloped neckline. Zipper closure lower back. Has lining that goes mid way down skirt. Not see through. I’m 5”5 and the skirt covers my feet. It is backless. Very pretty. size is Large HOWEVER it fits like a S/M. There are no tags attached to garment but I do have the bag it was sent with barcode and size.