So far married life for Katie has consisted of giving birth to their kids Jett, one, and two-month-old Bunny while Kieran's been busy apologising for affairs with her former pals.
Happily, the couple have now overcome the tough times and Katie, 36, is planning an over-the-top bash to prove that their problems are in the past.
The get-together will cost around £100,000 and will include a celebrity guest list, extravagant venue and white doves to symbolise Katie and 27-year-old Kieran's love, we're told.
So with Katie busy planning the spectacular event, what could possibly go wrong? Quite a bit it seems, when you consider that Katie is hoping that her bash will outshine her ex-husband Peter Andre's upcoming wedding to fiancée Emily MacDonagh.
"Her wedding plans have already turning into a bitter battle between her and ex-husband Peter," a friend tells us.
"Katie's in the throes of planning a really expensive vow renewal event and she's even sourcing theme ideas and picking a guest list.
Just last week Pete, who has seven-month-old Amelia with 23-year-old Emily, spoke about his plans to marry the gorgeous trainee doctor.
"I said we'd do it two years from the day we got engaged. That was nine months ago which means we've just got under a year and a half left," revealed Pete, 41.
And with Emily not keen on a winter wedding, it's thought that the couple could either marry next summer or in the summer of 2016.
But with Katie hoping to upstage her former hubby and his beautiful bride-to-be, trouble could be just around the corner.
Want to find out how Pete feels and why Kieran will face a lie detecter ahead of renewing his vows to Katie? Grab this week's copy of Reveal, it's out now!
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