Plus Size Prom Dresses With Straps Off Shoulder Plus Size Long Prom Dress PromGirl A Line Sweetheart Neckline Backless Sexy Beaded Short Backless Dress Lace Up Long Sequin Plus Size Prom Dress PromGirl. This plus size prom dress features a flattering A line silhouette with a stylish high low hem that adds dynamic movement. The sleeveless design and backless detail offer a modern, elegant touch while ensuring comfort and breathability. Crafted to enhance curves gracefully, this dress is an excellent choice for those seeking a sophisticated yet playful look at any formal occasion. Fabric: Taffeta Silhouette: A line Neckline: V neck Back Details: Back Zip Sleeve Length: Sleeveless Dress Length: High Low