Yes, chalk. It's not just for blackboards and sidewalks anymore. From the catwalk to Hollywood to the schoolyard, chalked hair is the latest fashion fad.  It's cheap, for one thing, so even pint-sized fashionistas on an allowance can afford to be stylish. It's also user-friendly, avoiding the cost and smell of  hair dye. And if your totally uncool parents aren't on board with it, chalk simply shampoos out. Click HERE for the full story from the Associated Press.