Scarlett Johansson is reportedly in the process of ditching her famous curves – and apparently we have Gwyneth Paltrow to blame.

The actress has always insisted that she is proud of her fuller figure, once declaring, "I don't need to be skinny to be sexy."

But a U.S. tabloid claims that Scarlett has finally succumbed to pressure to conform to the Hollywood stereotype.

And, unfortunately, her Iron Man 2 co-star Gwyneth been on hand to help her wittle away the pounds - a staggering 14lbs to be exact, according to the report.

Scarlett last month (left) having lost a reported 14lbs on the Gwyneth Paltrow Plan, and looking curvier in May 2008 (right)

A source tells Star magazine, "The pair have been doing daily workouts with Gwyneth's personal trainer Tracy Anderson.

"Scarlett is also staying away from carbohydrates."

The star's decision to diet is said to have been influenced by competition from younger, more slender actresses.

A friend says, "Scarlett has always been happy with her curves, but recently she has been feeling pressure to lose a few pounds.

"She knows that she is up against tough competition from younger, prettier and increasingly skinner actresses.”

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