High Quality Content by WIKIPEDIA articles! Atomic Kitten were an English girl group from Liverpool, first established in 1997. Created by Andy McCluskey, the final line-up, and most commercially successful, consisted of Natasha Hamilton, Liz McClarnon, and Jenny Frost. Heidi Range and Kerry Katona were two original members, however, they were replaced respectively by Hamilton in 1999, and Frost in 2001.