Peter Kramer / Invision/AP 1 / 11
Peter Kramer / Invision/AP 1 / 11

Music mogul-turned-TV star Simon Cowell always travels by private jet because he refuses to give up cigarettes for commercial flights, according to his former co-worker Danni Minogue.

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The Australian singer worked with Cowell on his U.K. TV talent show "The X Factor," and she reveals her former boss spends a fortune on private travel just so he can smoke.

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Minogue even insists Cowell won't travel as far as Australia because of his habit.

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She tells Britain's The Sun, "He has that whole thing where he hates flying -- and there's the smoking thing. That's why he has to go on a private jet -- so he can smoke. He's like, 'I can't get a private jet to Australia, but I can't do the non-smoking thing either.'"