Sarah Harding participating in weekly Saturday night live performances (alternating weekly between the girls and boys). Each week the contestant polling the fewest phone votes was eliminated, until the final line-ups of the groups emerged. Harding joined Nadine Coyle, Cheryl Tweedy, 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 number one. Girls Aloud hold the record for the shortest time between formation and reaching
Girls Aloud of the five members being the face of a different shampoo. The same year, Girls Aloud also sealed a deal with the UK division of Samsung. They endorsed mobile phones and MP3 players, made personal appearances and sang at Samsung events, and contributed to competition prizes, among other activities. The Samsung F210 Purple came with a 1GB memory card featuring Girls Aloud content. Girls Aloud appeared in television advertisements for Nintendo DS the following year. The girl group signed a deal to front a promotional campaign for a new low-calorie KitKat bar called "Senses" in March 2008. The chocolate bar