A pairing and indexing system for a garment pair. The pairing and indexing system includes a garment pair and a fastener. The garment pair has at least one characteristic. The fastener is attached to the garment pair, replaceably attaches the garment pair to each other for pairing so as to prevent loss of either of the garment pair due to separation from one another, an inconsistent pairing of the garment pair of a similar type, etc., and has at least one attribute. Each of the at least one attribute of the fastener has a predetermined correlation to a respective one of the at least one characteristic of the garment pair.