Tentacles are typically foam-backed or stuffed with fiberfill, often printed with suction-cup details and covered in sequins. They’re supported by hoops that thread through elastic loops in the skirt yoke.
Shirts are listed as 96% nylon/4% spandex. Corsets and skirts are described as 100% polyester. Wigs are synthetic (100% polyester) on a mesh cap. Skirts and tentacles also reference foam backing, chiffon underskirts, jersey-knit base layers, metallic mesh overlays, satiny yokes, and sequin coverings.
Corsets commonly have a back zipper and built-in boning for bust support. Skirts use a wide elastic waistband with metal snaps, and some yokes include elastic loops to thread hoops through for tentacle support.
Many listings include a light-up conch-shell necklace or shell prop. The shell lights up using two CR2032 button batteries (demo batteries included).
Skirts are multi-layered: an inner satiny yoke or jersey-knit base supports chiffon underskirts, while outer layers feature foam-backed tentacles, metallic mesh overlays, and sequin coverings for added shine.
The listings repeatedly state the costumes are “Officially licensed.” At least one description also includes a maker statement indicating the costume is made by the seller.
Some listings explicitly include a wig as part of the set, while other descriptions note the wig shown in photos is sold separately.
Sequin-covered elements—specifically a sequin-covered corset and sequin-covered tentacle layers—provide the shimmering, glitzy appearance.