Glamorous A-Line Square-Neck Sequin-Accent Cut-Out-Back Black Chiffon Floor-Length Prom DressesThis glamorous prom dress features black chiffon fabric: it has a square neckline (with draped detail), sleeveless design (with silver sequin shoulder accents), flowing A line silhouette, dramatic cut out back (with tie detail), and a sweeping floor length hem. The sparkling, modern style is perfect for proms, formal galas, or evening events.