A Line Square Neckline Sleeveless Satin Prom Dresses With Pockets Missacc Stunning Black Prom Dresses Elegant, Chic & Timeless Styles Rihoas Charming Black Straps Sweetheart Sleeveless Prom Dresses A Line Long W Bellasprom Sweetheart Black Evening Gown Split Long With Pleats. This Charming A Line Satin Square Sleeveless Black Prom Dress features a flattering A line silhouette and a sleek satin fabric. The square neckline adds a touch of sophistication. while the sleeveless design keeps you cool and comfortable. Complete with a split detail. this dress offers a modern twist on a classic look.