While most of us ditched the half-up half-down style soon after our volleyball or soccer careers ended in school, celebrities still often use the 'do.
Why? When done right, it's an ideal way to add a little volume to your look. Plus, the hybrid effect allows you to keep you hair long, loose and out of your face without adding a headband.
Recently three stars even demonstrated how practically and versatility the style can be. Jessica Biel opted for the most casually, pinning back a few strands at the very top of her head. Jenny McCarthy went for a more glamorous style creating a slight bouffant on top of perfectly polished waves. Not to be outdone, Salma Hayek debuted the most dramatic 'do by collecting a sizable section of the top half and pinning it back in a sleek, structured style.