Karen Gillan feared going bald would mean people think she's a boy.
The 25-year-old beauty shaved off her long auburn locks to portray Nebula in Guardians of the Galaxy.
While she loves her new 'do, she feared there could be some confusion over her gender.
"[It's] liberating! I'm really, really glad I did it!" she exclaimed to Total Film.
"I was really scared beforehand. I remember turning up to the set of Guardians of the Galaxy and everyone had been briefed that there might be tears. I was like, 'Guys, it's fine.'
"Because I'm really tall and not curvy I really could be mistaken for a boy. People do look at pictures of a holiday that I went on and they're like, 'Who's that guy?'"
Karen isn't the only one to undergo a huge transformation for the film.
Her co-star Michael Rooker plays Yondu and has his entire body painted blue for the part.
"I'm blue! Yeah, my body's blue. After a while you're like, 'OK, I'm ready to be un-blued.' It's fun though. It's a very cool costume. It's beautiful," he smiled.
He added that Karen's lack of hair has made him feel closer to the star.
"I feel connected to her - I think it's because I have no hair either!" he joked.
"She's wonderful. I loved that she flung her wig off during Comic-Con."
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