Cheryl Cole, Dannii Minogue involved in 'backstage catfight'

London, July 6 : It's just been few days she joined the judging panel of the reality show 'X Factor' and Cheryl Cole has already got herself involved in a massive backstage feud with fellow judge Dannii Minogue, it has emerged.

The reason is that Minogue is jealous of Cole's close relationship with Simon Cowell - and feels as though she has stolen her thunder on the show.

According to a source, feelings run so deep that Cowell has to keep the two apart backstage.

"Those girls absolutely hate each other," News of the World quoted the source, as saying.

"Of course, they're both professionals during filming but when the cameras stop rolling it's clear they have a big problem with one another.

"There's been a lot of aggro. We've heard plenty of snide comments backstage and the cameras have picked up the fact there's obviously a lot of needle there.

"Simon has tried to intervene but there's nothing he can do about it.

"He and Cheryl get on like a house on fire. He thinks she'll be a huge star and a big hit with viewers.

"The pair of them are great friends. And Dannii doesn't like it one bit," the source added.

Producers are terrified the girls' tempers will flare during audition filming in Glasgow.

ANI