A light illuminating assembly having at least one light emitting element is operatively associated with the decoration on the exterior of wearing apparel and has an improved assembly for securing the light emitting element in predetermined openings which includes, an enclosure for the light emitting element, a shoulder on the inner end of the enclosure forming a stop to limit the extension of the enclosure from the interior to the exterior of the wearing apparel, the enclosure being threaded adjacent the said inner end so that a threaded nut can be detachably connected to the enclosure after it extends to the exterior of the wearing apparel to removably hold the light emitting element in the predetermined position on the exterior of the wearing apparel so as to illuminate and enhance the decoration when the light emitting element of the light illuminating assembly is placed into operation.