The longest hair extension measured 820.29 m (2691 ft 3 in) and was achieved by Nikola Kulezic (Serbia) in Sabac, Serbia, on 26 June 2013.

Nikola applied the hair extension to model Ivana Knezevic (Serbia). He used synthetic hair of different colours and shade, using the techniques of knotting, knitting, singeing and bonding.