Tulisa's dig at rival judge Louis

Tulisa Contostavlos has taken a swipe at her fellow X Factor judge Louis Walsh - for not having recent chart success.

Music mogul Louis - who has managed acts such as Boyzone and Westlife - hit headlines this week after branding the N-Dubz star a "chav", but Tulisa insisted she had earned her place on the show.

The Young singer told Bliss magazine: "I'm not any less educated in music just because I'm a newbie on the scene... I still deserve my spot on the panel.

"When was Westlife last No1? Because mine was a couple of weeks ago. Ha! Don't give me all that 'selling millions of records' rubbish. Because how long ago was that?"

Louis told the Radio Times that Tulisa, who won last year with Little Mix, was "a bit rough round the edges".

He added: "When they announced she was on the panel I was expecting a chav in a tracksuit - which is what we got - but she's a lot of fun. She thinks she's a bigger star than she actually is though."

Tulisa - who returns with a new series of The X Factor this weekend - also revealed she enjoyed a wild night out with boyband One Direction, despite having a gig the day after.

"We got pretty hammered, it was quite funny," she confessed.

"Everyone knows I'm a party animal. But they convinced me to go out then they all ended up absolutely hammered and I was there, still standing, going, 'I told you not to bring me out!'"