Lohan strikes a sexy pose on the set of a photo shoot in the Hollywood Hills. Plus: Kim Kardashian, John Mayer, Rihanna and more

5 of 17

ACTION FIGURE

He's suited up and ready to save the world! Back in action on the Iron Man 2 set, Robert Downey Jr. shoots a scene for the action film Wednesday in Los Angeles. The Jon Favreau-directed movie also stars Scarlett Johansson, Gwyneth Paltrow and Samuel L. Jackson.