Black strapless gown-10/12

Black strapless gown by Metro Section . In perfect condition. Worn once. Gown measures, laying flat, 54 and 1/2 in long from the top edge of the front of the gown to the bottom hem line. Armpit to armpit, laying flat, gown measures 17 in. Back zipper. There are no straps. Waist measures 15 and 1/2 in. Size 14. I believe this dress fits more like a 10 or a 12, as I wear an eight and it is only slightly large on me. It is plenty long to wear with high heels.