Nadine Coyle weekly Saturday night live performances (alternating weekly between the girls and boys). Following her performance of "Fields of Gold", Walsh told her she gave the "performance of the night. Stole the show for me," while fellow judge Halliwell said, "I'd love to buy a single of yours already". Coyle joined Cheryl Tweedy, Sarah Harding, Nicola Roberts, and Kimberley Walsh to comprise the new girl group Girls Aloud, formed through the show by a public vote on 30 November 2002. The group's debut single "Sound of the Underground" peaked at number one on the UK Singles Chart, becoming the 2002 Christmas
Girls Aloud edition. The group was also named the United Kingdom's biggest selling girl group of the 21st century, with over 4.3 million singles sales and 4 million albums sold in the UK alone. In March 2013, after the , the group announced their split. The group Girls Aloud was formed on 30 November 2002, in front of millions of viewers on ITV's "". The concept of the programme, hosted by "Big Brother" presenter Davina McCall was to produce a boyband and a girlgroup who would be "rivals" and compete for the 2002 Christmas number one single. Following the initial success of