Sleek and sassy, this beautiful strapless long mermaid prom dress is an exciting style that is sold exclusively at PromGirl. With a twist-front sweetheart neckline, this long mermaid prom dress is uniquely sleek and sensual for prom, galas, and other formal events. The strapless long formal dress has a hip-hugging long mermaid skirt with a dramatic sweep train that is sure to impress. Affordably priced under $200, this fabulous long mermaid prom gown is a captivating choice for your memorable evening.