The hair extension of the present invention includes hair strands affixed to a ring assembly. The ring assembly comprises an inner ring and an outer ring. The inner ring is configured to nest within the outer ring, with distal ends of the hair strands impinged between the inner and outer rings. A plait of a user's hair is inserted through the ring assembly of the hair extension. In one embodiment, the hair extension is attached to the plait with a band, or by sewing the hair extension to the plait. In another embodiment, the ring assembly is modified with a fastening assembly for fastening the hair extension to the plait.