Mischa Barton and Paris HiltonMischa Barton and Paris HiltonThings are getting a bit prickly in the world of Hollywood's super rich kids.

With Paris Hilton getting involved in a spat with Mischa Barton.

It was reported by the Daily Mirror that The OC star Mischa had said a few cutting words about Paris at the Bafta afterparty... something along the lines of:

"Paris isn't my rival. I met her one or two times and she's making out there's this big rivalry between us and there so isn't.

"She seems to hate everyone around her age who is more successful. Silly bitch... She does steal people's boyfriends!"

Of course, Paris, 25, hasn't taken the sniping reclining on her chaise longue.

Paris with Brandon Davis and Mischa and BrandonParis with Brandon Davis and Mischa and BrandonInstead, she's hit back telling the New York Daily News: "I don't even know the girl. I couldn't care less. It seems like she's the one trying to stir up a rivalry.

"I've never said a word about her in my life. But she seems to be spending a lot of time thinking about me."

It's believed the two stars fell out when Mischa, 20, started dating Paris' best mate Kimberly Stewart's ex, Cisco Adler.

But perhaps Mischa wasn't too impressed that Paris was hanging out with her ex, Brandon Davis, after the recent Brit Awards in London...

Confused?