Add a colorful costume to their dress-up box with rainbow costumes! Find vibrant, multi-colored costumes in the form of mystical unicorns, colorful birthday cake costumes perfect for a rainbow party, rainbow cat costumes and more. We also have mens rainbow costumes: don’t miss our Rainbow Stand Out Suit, ideal for costume parties and fun events. Add the finishing touches with rainbow accessories. Who knows, you might even find a pot of gold!