Gwyneth Paltrow (Above)
Scarlett Johansson 
Scarlett Johansson has been put on a diet by Gwyneth Paltrow. The curvy Lost In Translation star has lost over 14lbs since she began working out with her Iron Man 2 co-star in preparation for the movie. A source said: “The pair have been doing daily workouts with Gwyneth’s personal trainer Tracy Anderson. Scarlett is also staying away from carbohydrates.” The 24-year-old actress has reportedly decided to slim down amid fears she could lose out on movie roles to younger, more attractive actresses. A friend said, “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.” She’d said: “I don’t need to be skinny to be sexy.”