Halloween Costume wearing of costumes at Halloween may come from the belief that supernatural beings, or the souls of the dead, roamed the earth at this time. The practice may have originated in a Celtic festival, held on 31 October to mark the beginning of winter. Transform into the life of the party with our Costume Halloween collection, designed to bring your favorite spooky, magical, or whimsical characters to life. Made from comfortable, high-quality materials, each costume features vibrant details and creative designs that make dressing up both fun and memorable. Perfect for trick-or-treating, parties, school events, or themed photoshoots, these costumes let you embrace the Halloween spirit in style.