Discover 28 siren mermaid costume and mermaid costume ideas on this Butterfly Gradient Side Slit Velvet Top & Long Mermaid Skirt ARCANA Leg Avenue 2 Piece Deep Sea Siren Sequin Bustier And Me Fin Skirt With Skirt only seductive sea siren mermaid costume goddess cosplay etsy Purple Velvet Cascading Ruffle Slit Mermaid Skirt Backless Siren Dress. Long Maxi Skirt with Front Panel and Splits. Made from Soft, Stretchy, Durable Rayon Lycra that Drapes Beautifully. Waistband has an Inner Elastic to Keep it Securely on your Waist. Perfect for Festivals, Dancing, Casual and more Formal Occasions. SizingThis skirt normally fits a Small to a LargeLength of Skirt measures approx. 39''Top of Waistband Where the Elastic is Measures approx. 24''Bottom of Waistband Where it Joins to the Skirt Measures approx. 30''Recommended: USA: Size 2 to 8Australia UK: Size 6 to 12