Kristen Stewart's confidence-building fights

Kristen Stewart found it a "very confidence building experience" to punch Chris Hemsworth during filming for 'Snow White and the Huntsman'.

The brunette beauty - who plays the titular character in the forthcoming movie - gave the Hollywood actor, who stars as Eric the Huntsman, a black eye while shooting the motion picture but she admits it made her feel "horrible".

She said: "It's actually a very confidence building experience. I don't like punching anyone. So, you know, when you dream and your hand just slides right down their face, it doesn't do that in real life. It really works.

"God, that really made me feel horrible, though. I mean, like instantly hot tears and I was like "oops!" We were watching it. It looks - it'll be in the movie."

Despite her character's violence against 28-year-old hunk's alter-ego, Kristen - who is dating 'Twilight' co-star Robert Pattinson - admits Chris is an "amazing" guy to work with.

She added to PopSugar.com: "Before I met him, I was like, 'gosh, so charming.' You know what I mean? Like he's so ridiculously, seemingly nice. Movie-star calibre nice. But he really actually just is. But then again, it's strange working - cause I mean it's not a secret. It was completely different part before. It was totally like a rethought.

"So when he came in it was like, 'Wow! This is f***ing interesting!' I mean, it was like they really elevated it. Chris is an amazing, nice guy and also [has] great instincts and he can roll with everything on set. He's really relaxed, whereas I'm always like, 'oh my god!' I use my anxiety to do this and he's always sort of like - he's a good energy for me. I really like working with him."