Cheryl Cole told to quit cigs for U.S.

They're proving to be her crutch as she makes the 'stressful' move to Los Angeles to pursue her American career.

Cheryl Cole has been told to stop smoking - or stub out any chance of cracking America.

The pop star is trying to land a US X Factor judging job, has spent weeks working with a voice coach to improve her speech.

But her voice coach has told Cheryl, 27, to kick her 20-a-day habit if she wants any chance of cracking America, according to The Sun today.

A source told the paper: 'Cheryl's teacher has advised her to stop smoking.

'But she says the move to LA and X Factor job is stressful enough without having to try and quit the cigs on top.

'Voice coaches are determined to make her sound more American but in a natural way. Basically just so she can be understood.'

Miss Cole is believed to have tried to stop smoking last year but failed, admitting: 'I miss smoking when I stop. It's not cool to say so, but I do.'

During breaks in filming the X Factor, she and boss Simon Cowell have been seen disappearing off together for a cigarette.

Yesterday it was reported that U.S. X factor producer LA Reid - the only person officially announced so far as being on the show - let the news slip that Miss Cole is joining the panel before it could be revealed by Cowell.