Cheryl ColeOur X Factor audition song would be something sassy, obviously.

But what would Cheryl Cole sing?

Nothing by Mariah Carey or Whitney Houston, that's for sure.

She told The Sun: "I know my limits and am realistic about my ability.

"I would never attempt a Whitney or a Mariah song. You'll always get compared.

"And there is no comparison."

OK, but what's her advice then?

She reckons: "I would stick to something simple but beautiful."

Fair enough.

She also revealed she's not all that comfortable with being labelled a judge.

She said: "I like to think I'm there to give opinion and advice. I try to be honest - but fair to their feelings."