They’ll cast a spell this Halloween with our enchanting twist on a costume classic. It’s designed with a cool web pattern on the hat and dress that glows when the lights go out, and 3-D spiders crawl up the cape for a truly bewitching touch. DETAILS THAT MATTER This stunning costume is designed by our talented Pottery Barn Kids team who personally make the first sample and plan every special detail. Our costume is finished in garment-quality stitching and construction so it can be handed down to siblings and worn for years to come. Made of 100% polyester organza and tulle fabrics. Dress and hat glow in the dark. Glow-in-the-dark material needs to “charge” under bright light for approximately half an hour to glow properly. Glow lasts for approximately three to four hours. The glow effect will become weaker over time because of the constant rubbing. Costume is yarn-dyed – fibers are treated individually with environmentally safe dyes before weaving to offer vibrant, lasting colors. Undergarments not included. 3-piece design includes 1 dress, 1 cape and 1 witches' hat. Like New! Only worn once!