After knocking back reports that they would represent the UK at the Eurovision Song Contest, Liz McClarnon, Natasha Hamilton and Jenny Frost later confirmed plans for a series of summer gigs.
Asked about the reports, one-time member of the girlband Katona told Heat: "I don't think anything's been set in stone, but I think it would be really good to see the girls back on stage, and obviously, if they invited me up it would be good fun."
Of whether she could make a guest appearance with the band similar to Robbie Williams's temporary return to Take That, she added: "You never know, there could be four of us on that stage."
The first lineup of Atomic Kitten featured McClarnon, Katona and future Sugababe Heidi Range, but Range quit in 1999 due to artistic differences and was replaced by Hamilton. Katona left the band in 2001 when she became pregnant and was replaced by Frost.
Range joined Sugababes in 2001 and since the departure of Keisha Buchanan in 2009 has become the longest-serving member of the group.
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Watch the Atomic Kitten 'Whole Again' music video below: