Nicola RobertsNicola Roberts appears to be a well-balanced lass.

But everyone has their limits.

She's had it up to here with Chris Moyles having a dig.

In a plea publicised by Heat magazine Nic's told Chris, in no uncertain terms, to back off.

We would tell her to wash her mouth out with soap, but we're fully backing her on this one.

The move comes after the Radio 1 DJ lashed out at Nicola once again on his show - the latest in a long line of insults.

Chris, who in the past has labelled Nic "the ropey-looking ginger one", made a fresh jibe at the singer recently, talking to her via his listeners.

"What's with the long face horsey chops?" Chris jeered. "Give us a smile."

It was the final straw for Nicola, who's now - hurrah - hitting back.

"I don't care what he says about me, but what bothers me is that there are loads of people being bullied out there for the way they look or act," she said.

She continued: "They are made to feel s*** about themselves because they don't conform to how society wants them to be.

"I can be quite shy but that doesn't mean I'm rude or miserable.

"Enough's enough, Chris. Shut the f*** up."

Quite right too.