"5 Colours in Her Hair" is a song by English pop rock band McFly, released on 29 March 2004 as both their debut single and the lead single from their debut album, Room on the 3rd Floor. Written by Tom Fletcher, James Bourne, Danny Jones and Ben Sargeant, the track is well known for its "Doo, doo, doo, doo, doo, doo!" lyrics at both the beginning and the ending of the song, with the music itself being indebted to 1960s surf and beat music, and was inspired by Susan Lee, a character played by actress Emily Corrie in the TV series As If, who wore coloured dreadlocks. The CD and 7-inch formats feature a duet with Busted singing a cover of the Kinks song "Lola".