Girls Aloud were a critically acclaimed British-Irish girl group comprising Nicola Roberts, Nadine Coyle, Cheryl Cole, Kimberley Walsh and Sarah Harding. The band was formed on the reality TV show Popstars: The Rivals, in which a girl band was pitted against a boy band in the race for the UK Christmas number one single in 2002. Girls Aloud came out on top, with their debut single Sound Of The Underground hitting number one and earning them a place