Salam Ya Sahby : Long Sleeves High Split Long Formal Dress Mermaid With Sequins YouTube. Turn heads in our Long Sleeves Mermaid Formal Dress featuring dramatic high split and dazzling sequins. This long gown combines modest coverage with glamorous sparkle. Perfect for formal galas and events. Full sleeve design with all over sequin embellishments. Available in multiple sizes. Discover stunning formal dresses at koscy today.