Katie, 36, is expecting her fifth child and admits that she adores the "chaos" of having such a big brood at home.
Speaking on her FUBAR Radio show this morning (24 June), the star said: "I know people must think I'm mad.
"At home, I've got Harvey who, although he's 12, wears nappies at night. He has complex needs and is quite childish.
"Junior and Princess are constantly winding each other up and then there's Jett, who is now crawling around.
"Now I've got another one on the way, but I love the chaos."
Opening up about her style of parenting, Katie added: "When it comes to hygiene, I'm strict. I never smack them.
"When I want the kids to do something, I just say it once or twice nicely. The third time I shout. They're so lippy as well! I'm not scary though, they say I'm too soft. I'm an easygoing parent."
Katie is expecting her unborn baby with her husband Kieran Hayler, however their marriage is currently hanging by the balance after it emerged he'd been having an affair with her best friend Jane Pountney.
On last week's radio show, Katie said Kieran had cheated with a second mystery woman. Kieran has not commented on the latest claims.
Kieran has previously admitted his seven-month fling with Jane, as has she. Jane added that she "deeply regrets" her actions.
Celebrities who have announced pregnancies in 2014:
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