Bummer!

Though, if you have to have a reason to drop out of Iron Man 3, it's nice that the reason is that you're just too busy with work because you're so in demand!

Right??

Jessica Chastain has had to drop from Iron Man 3 for that very reason.

Here's what the Oscar-nominted actress said of the unfortunate -- but understandable -- decision:wonder who will get it now?? We were looking forward to her being part of it!

Any thoughts on who U want to see in the role alongside RDJ??

[Image via WENN.]