Cheryl (singer) first contestant to qualify for the girl group, and was joined by Nadine Coyle, Sarah Harding, Nicola Roberts and Kimberley Walsh to form Girls Aloud, following the final public vote. The group's debut single "Sound of the Underground" peaked at number one on the UK Singles Chart, becoming the 2002 Christmas number one over boy band One True Voice's "Sacred Trust / After You're Gone". Girls Aloud hold the record for the shortest time between being formed as a band and achieving a number one single. Girls Aloud released their debut album "Sound of the Underground" in May 2003, which
Girls Aloud has also released "Girls on Film" and "Style". Official calendars have also been issued annually from 2004 to 2009, the only exception being 2005. Girls Aloud co-wrote an autobiography titled "Dreams That Glitter – Our Story". The book, named after a lyric in "Call the Shots", was published in October 2008 through the Transworld imprint Bantam Press. Before the release, OK! magazine bought the rights to preview and serialise the book. In 2007, Girls Aloud signed a £1.25m one-year deal to endorse hair care brand Sunsilk. The girls filmed a television advertisement and appeared in and magazine advertisements, with each