An elegant look with sultry details makes this long prom dress a glamorous option for your formal event. Ideal for a military ball or gala, this beautiful evening gown, from the designers at Alyce, is a one-of-a-kind dress that's sure to wow the crowd. The slinky mermaid dress has a square neckline with thin shoulder straps that cross over the open back and tie at the low back for a comfortable fit. In a clingy jersey fabric, the long skirt skims over the hips before fanning out and pooling into a floor-sweeping train. An impressive design with star quality, this long prom dress, under $250, is overflowing with style for your special occasion celebration.