Posted by Adam

Tuesday April 7, 2009

Scarlett Johansson is being forced to get into shape – by her Iron Man 2 costar Gwyneth Paltrow.

Paltrow is keen for the Lost in Translation star to lose a few pounds before they start filming, so the pair have been working out together.

A source tells Britain’s Star magazine, “Scarlett and Gwyneth have been doing daily workouts with Gwyneth’s personal trainer Tracy Anderson. Scarlett is also staying away from carbohydrates.

“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.”

Johansson, 24, previously insisted she loved her fuller figure and felt no pressure to diet. “I don’t need to be skinny to be sexy,” she said.