Sundance Film Festival is kicking off, and Kristen Stewart  used the occasion as a reason to bring back one of her favorite hairstyles. At the premiere of Camp X-Ray today, Kristen accented her grungy, sideswept waves with two tiny braids. This braided undercut style  is one we've seen her in before, and it's slowly becoming a signature look for the actress. Kristen paired her hair with sparkling silver eye shadow and loads of black eyeliner. What do you think of her look?