Atomic Kitten are an English pop girl group formed in Liverpool in 1998 by Orchestral Manoeuvres in the Dark (OMD) frontman Andy McCluskey, who served as a principal songwriter during the band's early years. The line-up consists of Liz McClarnon, Natasha Hamilton, and Kerry Katona. Former Precious singer Jenny Frost joined the group in January 2001 when Kerry Katona quit on becoming pregnant; when the group reformed in 2012, Katona replaced Frost. To date the group have had three UK #1 singles: "Whole Again", the fourth-best-selling girl-group of all time; "Eternal Flame", a song originally recorded by The Bangles; and "The Tide Is High (Get the Feeling)", a song originally recorded by The Paragons and by Blondie. They have also had two double-platinum #1 albums in the UK: their debut Right Now, and its follow-up Feels So Good. They released their final studio album, Ladies Night, on 10 November 2003.
As of April 2013, Atomic Kitten have sold over 10 million records worldwide.
The group announced their split following Hamilton's departure in April 2004, although they returned briefly the next year to release a new version of their single "Cradle". They also made one-off appearances in 2006 and 2008 to release charity singles. On 4 March 2012, Hamilton claimed that the group would be reforming during the year, although squabbling between Katona and Frost made this dubious. Then on October 18, it was announced that McClarnon, Hamilton, and Katona would reunite for the ITV2 series The Big Reunion, along with five other pop groups of their time—B*Witched, Five, Liberty X, Honeyz and 911. Frost was unable to take part in the comeback because of pregnancy, but Hamilton has since confirmed that Frost would be welcomed back if she wanted to rejoin the group in the future.