Here's a gorgeous long mermaid prom dress with sensational details. The beautiful one-shoulder evening gown has massive ruffles on the asymmetrical neckline for an eye-catching look at prom, fancy galas, and other formal events. The long formal dress includes a curve-hugging mermaid skirt that opens in a flirty side slit before ending at the floor with a dramatic train that follows behind every step. Seductive and figure flattering, this sensational long mermaid prom dress combines elegant simplicity and dramatic details.