News flash: the tousled, textured strands you took hours trying to achieve last Fall are on the outs and are making way for something a little more sleek. "We're starting to see really on-purpose hair," celebrity stylist Mark Townsend told us when talking about trends for Fall. "Spending a few more minutes on your hair can actually be a good thing." So that hair straightener that's collecting dust in your bathroom drawer? It's about to be your new best friend. Pull out your straightening serum, fire up your blow driers, and flip through our celebrity gallery for instant inspiration.