Atomic Kitten is an English girl group from Liverpool composed of Liz "Lil" McClarnon, Natasha "Tash" Hamilton, and Jenny Frost - who replaced original member Kerry Katona in January 2001. Another member of Atomic Kitten was Heidi India Range, who left the group and later on joined the Sugababes. Many of their singles and albums entered the Top 40 charts worldwide such as "Right Now," "Whole Again," "Eternal Flame," "The Tide Is High," and "Ladies Night."

Atomic Kitten was formed in 1997 by Andy McCluskey of ’80s band Orchestral Manoeuvres in the Dark and included Heidi Range in the original line-up, along with Liz McClarnon , Natasha Hamilton and Kerry Katona. Heidi left the group and was only featured on the demo recordings. In 2001 Heidi joined the Sugababes . The group was first called “Honeyhead” but later renamed itself to “Automatic Kittens”, the name of the label of its designer, and abbreviated to “Atomic Kitten.” The group