Downey Jr. in Armor on Iron Man 2 Set

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People has posted this photo of Robert Downey Jr. wearing the armor on the Los Angeles set of Iron Man 2 on Wednesday. Opening May 7, 2010, the Jon Favreau-directed sequel co-stars Gwyneth Paltrow, Don Cheadle, Jon Favreau, Mickey Rourke, Sam Rockwell, Samuel L. Jackson, Scarlett Johansson, Garry Shandling, John Slattery, Kate Mara and Clark Gregg.