Strapless black prom/bridesmaid dress

Black Impression Bridal dress used as prom dress. I believe it's chiffon. Strapless/sweetheart neckline. Ruched bodice with boning inside for support. Has bow that hangs down. Was purchased/worn in 2013 and only worn the once so in great condition. I'm 5'6 and the hem hits below my knees, measures 36 inches long from the side. Size 4.