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
Christmas music to have ever been Christmas number one twice, in both 1975 and 1991. At the turn of the 21st century, songs associated with reality shows became a frequent source of Christmas number ones in the UK. In 2002, "Popstars The Rivals" produced the top three singles on the British Christmas charts. The "rival" groups produced by the series—the girl group Girls Aloud and the boy band One True Voice—finished first and second respectively on the charts. Failed contestants The Cheeky Girls charted with a novelty hit, "Cheeky Song (Touch My Bum)", at third. Briton Will Young, winner of the first