Simply beautiful, this long mermaid prom dress is as impressive as it is budget friendly. For under $200, you can have this upscale empire-waist evening gown that is crafted in gleaming stretch satin from the scoop neckline to the horsehair hem. In misses and some plus sizes, this long satin formal dress has supportive shoulder straps that lead to the strappy open back, while the hip-hugging long mermaid skirt fans out around the knees before pooling into a small train that follows behind. Make your very special occasion a beautiful one when you slip into this long mermaid prom dress that combines impressive styling with affordability.