The supermodel dreams of splashing out on the extravagant purchase so she can fly all over the world in style.
She told America’s Vogue magazine: "I'm saving up for a private jet. I'm going to call it the Kate express."
The 34-year-old British beauty – famed for her wild partying – also confessed she is thinking of moving to the countryside to give her five-year-old daughter Lila a different upbringing.
She said: "At weekends we go off to my other place in Gloucestershire where I keep most of my clothes in a massive room. When we are there, we take a neighbour’s pony and trap to the pub. But I must say, I've been thinking of moving to the countryside full time so that Lila can have a rural childhood."
Despite wanting to live a healthier outdoors life, Kate - who says she wouldn't have botox because she'd be "really embarrassed" if a photographer asked her to frown and she couldn’t – insists she will never give up smoking.
She said: "I won't be quitting cigarette because it’s who I am. I don't want to create a phoney facade. I think I just have to be myself, otherwise I'd be a paranoid mess."
Lila is Kate’s daughter from a previous relationship with magazine publisher Jefferson Hack.
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