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Kelly Osbourne’s cat fight with Paris Hilton at Coachella started over a VIP table, a well-placed source confirmed.

Osbourne was not amused when her group had to move from a plum VIP table at the Neon Carnival near the Indio, Calif., music fest, to make way for Paris and her posse.

The “Fashion Police” star tweeted Sunday, “@ParisHilton please grow up there is no need to act like a child you could of happily joined us! it’s not 2005 no one cares!”

But our source said Paris didn’t see Osbourne at the table and it was organizers who asked her to move.

Paris tweeted to her, “I’m confused, as I did not see you once this entire weekend. No clue how these stories get invented.”