Transform any occasion into a magical experience with our unicorn dress up collection! Discover vibrant toddler unicorn costumes perfect for Halloween adventures or imaginative play, like our popular Rainbow Unicorn Costume with detachable wings. Our selection includes essential unicorn accessories like glittering horn party hats and iridescent headbands that complete the mystical look for birthday parties or dress-up events. Parents love our affordable kids costumes that combine quality with fantasy appeal, including exclusive Build-A-Bear Craze outfits designed for comfortable all-day wear. Create unforgettable birthday party supplies bundles by pairing costumes with matching unicorn-themed favors - from shimmering wands to rainbow tutus. With options ranging from clearance-priced accessories to premium Halloween unicorn costumes, we make it easy to stock up for multiple events. Many costumes feature machine-washable materials and adjustable sizing, growing with your child through years of magical play. Don't forget to explore our coordinating party decorations to create a complete enchanted universe for your next celebration!