Charlize TheronCharlize TheronRelax folks, fret not...

Although Charlize Theron looks like she's in distress, it's all in the name of acting.

So convincing is her performance, there's no wonder this chick won a golden Oscar statue.

On the set of her latest film, Hancock, Charl looked like she was enjoying a rather physical fight scene with co-star Will Smith.

And neither was holding back.

With some serious rough and tumble taking place, maybe Will was a little too forceful - and Charlize's boobs were sitting slightly precariously.

But, it's all in a day's work for a Hollywood actor.

Check out who comes out victorious in the gallery.