Black LACE DRESS size “14” but FITS LIKE 12

GREAT HOLIDAY, Stretchy, black lace cocktail dress with lining. Last pic shows where I gently raised the lining 5” so more lace would show but can be dropped back down if desired. Wore 1X for party. Does NOT fit like a 14….. more like a 12 Fabric tag is inside the part I turned up but I think it’s polyester & some spandex.