Gwyneth Paltrow (AP file photo)

Gwyneth Paltrow has signed on for the upcoming film "Iron Man," Variety.com reports.

The movie, based on the Marvel Comics character, also stars Robert Downey Jr. and Terrence Howard, and will be directed by Jon Favreau.

Paltrow has been cast as Virginia Potts, the personal assistant of Tony Stark (Iron Man).

Production on the film is set for March in Los Angeles.

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