Sexy and sleek, this simple long prom dress boasts subtle sophistication for elegant formal events. Sold exclusively at PromGirl, this tight prom dress hugs the curves in a soft fit-and-flare silhouette. Thick straps cross against the front to create a unique triangular cut out at the neckline before wrapping over the shoulders to frame the back in an open square. Make a stunning impression when you arrive at your next special occasion wearing this open-back long prom dress.