Raelyn Royal Blue Mermaid Off the Shoulder Satin Prom Dress with Slit Blue Prom Dresses Mermaid Blue Gray Off the Shoulder Prom Dress Luuvis Shiny Light Blue Mermaid Spaghetti Straps Long Beaded Prom Dress Off The Shoulder Prom Gowns & Windsor. Mermaid Blue Gray Off the Shoulder Prom Dress Silhouette: mermaid Hemline: floor length Neckline: off the shoulder Fabric: as picture Shown Color: as picture Sleeve Style: sleeveless Back Style: lace up Embellishment: none Built in Bra: yes