Who's Not Going to Star in Iron Man 3? Oscar Nominee Pulls Out of Key Role

Which actress has opted out of the anticipated sequel? Read on to find out!

There's been a lot of talk about Iron Man 3 lately.

We've heard some cool new facts about the anticipated flick, including new names joining the cast, and as always, we've also heard about certain celebs that are skipping out on the sequel.

And now, we have another (pretty) face that will be absent from the big screen.

Unfortunately, Jessica Chastain, who was slated to play a "sexy scientist" that goes toe-to-toe against Gwyneth Paltrow's character in vying for Iron Man's love, has dropped out of the film.

"Sorry to say that Iron Man 3 isn't going to work out," The Help star wrote on her Facebook page. "My schedule is jammed packed and I can't fit anything else in. The press announced my possible attachment far too soon. I know many of you wanted me to be involved, and I'm so sorry to disappoint you. Hopefully there'll be another Marvel film in my future. Shane Black and everyone on the IM3 team are really wonderful. I'm very excited to see the film when it comes out. xx"