L-R: Kimberley, Nadine, Cheryl, Sarah, Nicola

Look at these fresh-faced babies! This photo was taken right after they’d been announced as the winners of Popstars: The Rivals in November 2002 so they’d only been Girls Aloud for a few precious hours.

The Video: This is a 2008 performance of Girls Aloud’s first single, “Sounds of the Underground,” because the original video isn’t available in the US. The song was a breakthrough for the girls, becoming that year’s Christmas number one and is credited for changing the sound of British pop for the decade (no, seriously). The original video, featuring the girls in pink tracksuits and filmed in a London warehouse, was shot just days after the band was formed. Their style is a bit more sophisticated here, but the sound is the same.