The latest casting rumor for Iron Man 2 has Scarlett Johansson up for the role of Black Widow, aka Russian superspy Natasha Romanoff. Emily Blunt (Devil Wears Prada), who was first rumored for the femme fatale, may have scheduling conflicts with Fox's Gulliver's Travels. Variety reports Fox holds an option on the actress and may force her require that she grace it with her presence. If Blunt's reps can't find a way to have her star in both films, we might be seeing Johansson suited up in a black, skintight body suit come 2010.
