Scarlett Johansson sheds pounds with the help of Gwyneth Paltrow's personal trainer

has enlisted the help of Gwyneth Paltrow's personal trainer to shape up for her new film role.
The beautiful actress, who was once renowned for her hourglass curves, now does daily workouts with Gwyneth and fitness expert Tracy Anderson.
She has shed more than a stone since she began getting fit for Iron Man 2, in which Gwyneth also stars.

Toning up:  looks lean at an event in London last month, left, compared to her more voluptuous figure in 2006, right

American magazine Star says the Lost In Translation star has lost 14lbs - and at last month's Moet & Chandon Tribute To Cinema party in London she was looking decidedly less voluptuous.
In a short, close-fitting black dress, she showed less of her once-ample decolletage and a flatter stomach.

 Scarlett plays the Black Widow in Iron Man 2, in which Gwyneth Paltrow resumes her role as Pepper Potts and Robert Downey Jr and Mickey Rourke also star.
The film is scheduled for release in 2010 and Paltrow has moved her family lock. stock and barrel over to the U.S. to concentrate on filming.
Tracy Anderson has built up a reputation as being personal trainer to the stars, and also counts the super-fit Madonna among her clients.

Working out: Gwyneth Paltrow with her personal trainer Tracy Anderson

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Super fit: Madonna also trains with Tracy

She said of the singer: 'I want to keep her body looking like it's 20 years old.
'Because you don't have to have saggy arms, or poor skin tone in your 50s, or not have cute hips. It just doesn't have to happen.'
For the past 18 months, Madonna has followed the 'Tracy Anderson Method', a Pilates-style exercise regime which Anderson is now marketing worldwide.
And the singer reportedly installed an exercise contraption called the 'hybrid body reformer' - Tracy's version of a Pilates machine - in her London home.
Having already produced and directed a successful exercise video for Tracy, Gwyneth is now entering into business with her, and the pair plan to open a chain of gyms in Europe, Asia and Australia.

The Shakespeare In Love star struck up a close friendship with Tracy after she helped her get into shape following the birth of her son Moses.
Gwyneth recently said of her new business partner: ‘She’s funny, amazing at her job and all heart.’