Mischa Barton and Nicole Richie are reportedly sharpening their claws in anticipation of a fashion face-off.

The fomer OC star - whose wardrobe choices often come in for a good degree of flack - has been set to release a new head band range.

But plans to give the line the go ahead have been brought to a stand still because fellow hippy head band wearer Nicole Richie plans to do the same for her House of Harlow.

“Mischa is furious,” a source tells Star Magazine.

“She feels like Nicole completely copied her idea.”

Stay tuned to see who wins the battle of the head bands!

See celebrity style disasters below