We first saw this horizontal hippie headband hairstyle (wow, try to repeat that phrase five times in a row) on Mischa Barton back in March, and lately it seems to be more popular than ever among young Hollywood.

Mischa repeated this look a few months later at a benefit, and this week alone we've spotted fellow trendsetters Ashlee Simpson and Nicole Richie adorning their long and wavy center parts with thin, stretchy headbands too. Do you think you're ready to jump on board the hippie train and wear your headband across your forehead?

Source, Source and Flynet