Atomic Kitten are an English pop girl group formed in Liverpool in 1998, consisting of members Liz McClarnon, Natasha Hamilton, and Kerry Katona. The group was formed by Orchestral Manoeuvres in the Dark (OMD) frontman Andy McCluskey, who served as a principal songwriter during the band's early years. Sugababes singer Heidi Range was included in the original line-up but was replaced by Hamilton.
The group's debut album
Right Now was released in October 2000 and peaked at a disappointing #39 in the UK. After four top ten singles, Katona quit the group and was replaced by former Former Precious singer Jenny Frost. "Whole Again", their next single, became their most successful single when it topped the UK singles chart and became the 13th best-selling single of the 2000s. The group re-released their debut album, with some tracks re-recorded with Frost's vocals which hit #1 in the UK with the album going on to sell over 600,000 copies in the UK.
Between 2002 and 2004, the group released a further two studio albums,
Feels So Good and
Ladies Night, and a greatest hits album before announcing a break following their 2004 tour. The group sold over 10 million records worldwide. 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.
After making sporadic appearances in 2006 and 2008, 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.