One Shoulder Mermaid Prom Dresses With Sweep Train Royal Blue Sequins Royal Blue Off The Shoulder Long Mermaid Satin Evening Dresses 27dress Regal Royal Blue Off the Shoulder Gown with Mermaid Silhouette & Train Mermaid Off Shoulder V Neck Sweep Royal Blue Satin Formal Evening Dres Charming Off The Shoulder Sequined Royal Blue Mermaid Prom Dresses. This opulent gown is crafted from smooth royal blue fabric, featuring an off the shoulder sweetheart neckline, a form fitting bodice, a dramatic mermaid silhouette, and a flowing trailing train. The design balances bold, regal blue color with sleek fabric texture, making it ideal for formal galas, wedding receptions, or red carpet events. The royal blue hue exudes sophisticated, timeless allure.