This will be Kerry's third wedding and, despite originally wanting another over-the-top day, the mum-of-five and George just want it to have a personal feel.
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A source told The Sun: "Initially Kerry had planned a big fancy wedding but then she realised she didn't want a big fuss. She's changed a lot over the years and just wants a low-key, beautiful ceremony."
Kerry, 33, wants her wedding to 34-year-old George to be completely different from those to Brian McFadden and Mark Croft.
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Speaking to the Daily Star, a source said: "As it's Kerry's third wedding she didn't want to be saying the same things she said to Brian and Mark so they have penned their own vows so what they say is unique."
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After George's recent breakdown and the death of her grandmother Betty, 84, the most important thing to Kerry is finally marrying him.
The source added: 'Kerry hasn't half been through the mill. After all that's happened she and George just want to feel secure and loved."
Celebrities set to attend Kerry's wedding include her Atomic Kitten band mate Liz McClarnon, former footballer Neil 'Razor' Ruddock and Katie Price, following their reconciliation earlier this year.