Blue Mermaid Gowns & Windsor Blue Embellished Mermaid Dress Blue Mermaid Gowns & Windsor Blue Mermaid Gowns & Windsor Blue Mermaid Gowns & Windsor. This mermaid dress has a signature Roberto Cavalli touch with fluid lines and gorgeous embroidery. The plunging bodice and sleeveless pattern are embellished with intricate beadwork, and the flared mermaid hem emphasizes the feminine figure flattering design. Wear glittering jewellery and stiletto shoes to your next soire.