Munn's anxiety disorder   Play video

Actress Olivia Munn is forced to wear fake eyelashes because she pulls out her own during extreme bouts of anxiety.

The Iron Man 2 star has struggled to cope with her transition into the spotlight over the last few years and Munn admits her nervous energy often takes a toll on her body.

She tells the New York Daily News, "I don't bite my nails but I rip out my eyelashes. It doesn't hurt but it's really annoying. Every time I run out of the house I have to stop and pick up a whole set of fake eyelashes."

And the actress reveals her constant worry has put her off from starting a family and having kids.

She adds "It's not that I'm too busy with my career or anything, but I have this huge fear of something happening to a child of mine. What if I'm not a good parent and my child turns out to be a jerk? Like I need more anxiety in my life."