The glamour model - who has her own range of clothes, books, perfumes and bedding - has always been keen to earn cash and is forever coming up with ways to boost her wealth.
20 July 2012 Katie - who has an estimated £45 million fortune - said: "My mum's friend gave me the Kylie song 'Tears On My Pillow' for my 12th birthday and I also got a tape recorder so I used it to record that song and others off the radio and sell them for £1. I've always loved the thrill of making money."
"I was very shrewd from a young age. I remember going to a pet shop with my mum aged about nine and there was a black rabbit that I desperately wanted but she said 'No'. I thought to myself, 'I'm going to have that rabbit', and when we got home I found Mum's cheque book and wrote out and signed one in her name for the price of the rabbit.
"I posted it off to the pet shop and they phoned back a few days later and asked to check some details with my mum. I was grounded for a week."
While Katie - who is also known as Jordan - has done well for herself, she refuses to be flash with her money.
The mother-of-three told The Sun newspaper: "I've got a lovely home which I'm very proud of, I drive a nice car and I'm able to pursue my horse-riding hobby. But my kids still go to state school and my motto is 'Don't flash the cash'.
"When you come from a background of no money there is always part of you that thinks you could go back to that place. I like to think I'm generous but not stupid with money."
