The mum-of-five will hit the road with bandmates Liz McClarnon and Natasha Hamilton next year, visiting a slew of countries from England to Australia.
And it will be a first for Kerry.
Speaking on ITV's This Morning today, she said: "It's the first time I've ever done a tour with the kittens. I've never done one before.
"I've done Big Reunion but I've never been on tour with the kittens. It's terrifying! What if no one turns up?!"
We're pretty sure that's unlikely!
Atomic Kitten formed back in 1998 with Kerry, Liz and Natasha, but Kerry quit the band after becoming pregnant with daughter Molly, during promotion for single 'Whole Again'.
Kerry was replaced by Jenny Frost, but later Jenny left and Kerry rejoined the band.
Atomic Kitten appeared on ITV show Big Reunion in 2013 and took part in the accompanying UK tour.
This month, it was announced that Atomic Kitten will headline their own world tour next year, visiting England, Germany, Switzerland, New Zealand, Australia, Russia and Asia.
It will mark their 15th anniversary as a band.
As well as touring, they have a new album in the works as well.
Busy year for the Kittens!
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