Elegant Lavender Mermaid Sweetheart-Neck Strapless Lace-Up Back Floor-Length Satin Prom Dresses with SlitStep into elegance with LuodiLan's mermaid style prom dress . It features a strapless sweetheart neckline, sheer panel detailing (front and back), a lace up back for a tailored fit, a curve hugging mermaid silhouette, a dramatic high slit hem, a trailing train, and luxurious lavender satin with a luminous metallic finish. The gown blends romantic charm with modern sophisticationideal for formal galas, evening events, and special occasions. Back Style: