Marvel is reportedly looking at actress Jessica Chastain for the role of "a sexy scientist every bit as smart as Tony Stark" in Iron Man 3.

Chastain, recently seen in Tree of Life and The Help, had previously been offered the part, but had to turn it down due to scheduling conflicts. In the meantime, Marvel reportedly talked to Isla Fisher, Gemma Arterton and Diane Kruger.

What the addition of Chastain's character means for the relationship between Stark (Robert Downey, Jr.) and Pepper Potts (Gwyneth Paltrow) remains to be seen.

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