Nadine Elizabeth Louise Coyle is an Irish singer. In 2002, she was selected as a member of Girls Aloud, a pop girl group created through ITV's reality competition show Popstars: The Rivals. The group went on to receive large success, achieving a string of 20 consecutive UK top ten singles, two UK number one albums, five consecutive platinum selling studio albums, and receiving nominations for five BRIT Awards, winning Best Single in 2009 for "The Promise".

Sarah Harding was an English singer, model and actress. Her professional career began in 2002 when she successfully auditioned for the ITV reality series Popstars: The Rivals, during which Harding won a place in the girl group Girls Aloud. The group achieved twenty consecutive top ten singles in the UK, six albums that were certified platinum by the British Phonographic Industry (BPI), two of which went to number one in the UK, and accumulated a total of five BRIT Award nominations. In 2009, Girls Aloud won "Best Single" with their song "The Promise".