Festival feud between Hilton and Osbourne

Kelly Osbourne told Paris Hilton to 'grow up', on Saturday, when she bumped into her.

They were both at the Coachella music festival in Indio, California and it seems they got into a dispute.

Kelly was hanging out with friends at one of the VIP areas, when Paris came over.

According to UK newspaper The Mirror, Paris then stared fixedly and angrily at Kelly before storming off and accusing her of being a 'b***h'.

Kelly then posted onTwitter by adressing directly to Paris and accusing her of childish behaviour.

'@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!' said Kelly.

'As far as Kelly is concerned, this is something out of nothing. Paris is being ridiculously sensitive and attention-seeking', a source told the newspaper. 'Kelly was sitting with some mates, minding her own business, when Paris suddenly started b***hing and moaning, and slagging her off. She was asked by someone else to join the group, but declined and swanned off. The pair didn't speak for the rest of the weekend'.

This wouldn't be the first time Kelly and Paris have battled in public. Back in 2006, Ozzy's daughter accused Paris of being a bad influence on young girls.

Paris' then-boyfriend Stavros Niarchos trashed Kelly's hotel room at her 21st birthday party in Las Vegas.

The two did make up later on, but clearly it didn't last. 'We have fun together. I know that whatever I tell her, she tells everyone anyway, but I've always known she's not the friend that you tell your deepest secrets to,' Kelly said. 'She's a fun person, and there is a sincerity about her'.