Ozzy Osbourne's son, Jack, is now promoting his autobiography, '21 Years Gone' and he would stoop to anything to make it sell, according to the Babyshamble frontman Pete Doherty. In the book, in which Jack talks about his rough childhood and adolescence, the reality star also claims that he made out with Pete's fiancée, the supermodel Kate Moss.

As if rehab and staying sober and clean wasn't enough for the troubled rocker, now Pete has to fight Jack too, via the media. Enraged by the comments that Osbourne made in the book (that he kissed and made out with Moss and it 'felt just right'), Pete took a stand and came to save Kate the damsel, just like a genuine knight in shining armor.

In an interview with 'Life Style Extra', Doherty said: 'To use Kate like that, it's just not right. I mean, even if they did kiss before I was with her, it's not right. The twat is out of order.' According to the rocker, Kate denied ever having canoodled with Jack, and her word is more than enough for him.

'Kate denied kissing him and that's that. It's just a foolish jibe', Pete said, claiming that what Jack says is nothing but a futile and childish attempt at selling his book. On the other hand, it is well known that he is very possessive and jealous. So, maybe saying that he made out with Kate wasn't such a great idea for Jack.