Girls Aloud by Louis Walsh until 2005 when Hilary Shaw replaced him. The new group competed with the boys' winning group, One True Voice to have 2002's Christmas number one single. Girls Aloud won the battle with their single "Sound of the Underground", produced by Brian Higgins and Xenomania. The song spent four consecutive weeks at number one and was certified platinum in March 2003. The song received critical acclaim; Alexis Petridis of "The Guardian" stated that "it proved a first: it was a reality pop record that didn't make you want to do physical harm to everyone involved in its manufacture".
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