Cheryl Cole Calls Louis Walsh a Rubbish Boss on First Day as X Factor Judge

Cheryl Cole started X Factor filming off with bang yesterday -- calling fellow judge Louis Walsh a rubbish boss.

The pint-sized Girls Aloud singer, 24, took the cheeky swipe at her ex-manager when a band began praising him at an audition.

A source reveals, "The contestants said they wanted to have Louis as a boss and Cheryl piped up and joked 'No you don't!'

"With a grin on her face she told them Louis was a rubbish manager - obviously in reference to when he was in charge of Girls Aloud.

"Other than that, the judges have been getting on well. There's lots of smiling and joking and Cheryl was playing her part and being vocal about the acts she liked and disliked."

Cole, who shot to fame after appearing on Popstars: The Rivals six years ago, showed up to her auditions eager to impress Irish Louis. Months later she was put into Girls Aloud, who went on to score 18 consecutive top 10 hits. He stopped managing them two years ago to concentrate on his other bands and TV work.

Cole is Sharon Osbourne's replacement, after the 55-year-old rock matriarch quit the ITV show due to her feud with Dannii Minogue.