Halloween costumes are costumes worn on Halloween, a festival which falls on October 31. An early reference to wearing costumes at Halloween comes from Scotland in 1585, but they may pre-date this. There are many references to the custom during the 18th and 19th centuries in the Celtic countries of Scotland, Ireland, Mann and Wales. It has been suggested that the custom comes from the Celtic festivals of Samhain and Calan Gaeaf, or from the practise of "souling" during the Christian observance of Allhallowtide. The Christian tradition of acknowledging the danse macabre is also suggested as the origin of dressing up on Halloween Dressing up is not strictly restricted to Halloween among Christians, with similar practices being observed on holidays like Christmas. Halloween costumes are trad