(Cover) - EN Star Style - Cheryl Cole has intensified her work-out regime ahead of her starring role on the US X Factor.

The British songstress, who found fame with pop band Girls Aloud, was recently named as a judge on the upcoming show, alongside Simon Cowell, L.A Reid and Paula Abdul.

The brunette beauty is a national treasure in Britain, but in a bid to prove herself in the US, the star has teamed up with trainer to the stars, Tracy Anderson.

The pair - who were introduced by Cheryls dancer pal Derek Hough started their first session after 27-year-old Cheryl landed in America.

Cheryl works out anyway but she knows that LA celebrities have a completely different health and fitness ethos, a source told British newspaper The Daily Mirror. A few weeks back, Cheryl arranged to take lessons with Tracy after Derek Hough introduced them. She wants to make sure shes fighting fit and ready for the US X Factor and the American audiences and she wanted the best in the business for it.

The exercise expert who has trained the likes of Gywneth Paltrow and Jennifer Aniston had never heard of Cheryl before she headed over to America. Tracy, 34, revealed that she was unsure of who the star was until Derek who has been romantically linked to Cheryl in the past - mentioned her name.

I dont know who she is. I dont watch TV. Wait, is she dating Derek Hough? I trained his sister Julianne and we were on a TV show. He was telling me, My girlfriend really wants to meet you. She wants to train and do the method. Thats where I first heard her name, she said. (C) Cover Media