Gwyneth PaltrowGwyneth Paltrow has said people shouldn’t be so surprised that she signed up for Iron Man.

Even though her back catalogue has primarily included romantic comedies and more serious films, she said recently: “I have absolutely nothing against doing a movie with all kinds of special effects and everything.

“As long as the people involved are going to make me better at what I do, then I’m up for anything.”

“I would do any genre. Well, maybe not porn, but anything else.”

The comic book adaptation directed by Jon Favreau made an estimated $100million in its first weekend of release and is expected to be followed by two sequels.