Charlize Theron's Hair Clip Trick

Charlize Theron walks around her trailer on the Los Angeles set of a new photo shoot on Wednesday, puffing away at several cigarettes whilst waiting around for set changes.

Loving the pieces of paper towel and hair clips, Charlize! Class-ay!

Charlize, 31, will be starring in the war flick In the Valley of Elah, out Sept. 21.

The Oscar-winning actress will play Emily Sanders, a detective who helps a career officer (Tommy Lee Jones) investigate the disappearance of his son (Jonathan Tucker), an exemplary soldier who went AWOL after his recent return from Iraq. The film also stars: James Franco, Josh Brolin and Susan Sarandon.

10+ pictures inside of Charlize getting her hair clips on…