The model has flown to Australia just days before the reality show is due to start.
Katie, who has already been on the show twice, insists she is not taking part for a third time.
She tweeted: “I’m NOT going back in the jungle.”
The mum-of-four has been in the Oz promoting her new shoe range and her latest autobiography Love, Lipstick and Lies.
Former page 3 model Katie met ex-husband Peter Andre when she entered the jungle the first time round in 2004.
She went down under a second time in 2009, but quit the show after the public voted for her to take part in six Bushtucker trials in a row.
During an Australian interview, Katie revealed she now has no contact with Peter.
She said: “We don’t talk- he’s not the man I fell in love with. I thought he thought with his heart but now it’s about the money and fame- if you read the book it explains the reasons why.
“I’m not just being harsh when I say that.”
Katie insisted she loves the drama in her life. “My middle name should be drama but I love it. I think everyone should have some kind of stress in their life, otherwise it’s boring isn’t it?”
Joey Essex, Lucy Pargeter, Amy Willerton and Laila Morse are among those tipped to enter the jungle this year.
And, although the line-up hasn't officially been announced yet, TOWIE star Joey is already the favourite to win.
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