Reese WitherspoonReese WitherspoonSugar and spice and all things nice - that's what Reese Witherspoon is made of.

Or is it?

Something has made her flip her lid. She's got herself in quite the tizz.

But chill your boots, Reese, and tell us what it's all about.

Apparently, she lost her cool and gave a driver what for.

But why, pray tell, would sweet Reese do such a thing?

Well, because she thought he was going to run her over.

She was merrily jogging along when his car backed towards her.

She vented: "Be cool and watch where you are going."

However, the driver stuck to his guns and insisted he'd seen her all along.

Did he know he was being ticked off by an Oscar-winning A-lister?