The mother-of-five made the revelation on today's Loose Women as part of a panel discussion on leaving detailed instructions for what will happen to your assets – including social media accounts – after death.
Katie admitted she hasn't updated her will since marrying Pete, despite having been married twice since then and having two more children.
Everything goes to Pete and their kids Junior, ten and Princess, eight, as well as Katie's eldest child Harvey, 13, from her relationship with Dwight Yorke.
She's since married and divorced Alex Reid and is now married to Kieran Hayler, the father of her youngest children Jett, two, and Bunny, one.
"If I die on the way home, Pete, Junior, Princess and Harvey get everything. Alex was never on the agenda but Kieran... and I have had two more kids since then. I never thought about that until today. And everybody should.
She added: "I've had one will and three husbands."
Katie and Peter divorced in 2009 after nearly four years of marriage. She wed cagefighter Alex in 2010 but split from him a year later. She married Kieran in the Bahamas in 2013.
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