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
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