Celebrities Hair Change sin 2012

We may have seen a surge in pink hair, but for the most part, celebrities have remained relatively tame when switching up their style. Halle Berry has traded in her iconic pixie cut for a mass of curls, Olivia Wilde's made a colour change and so has Rihanna who also shaved part of her hair into an undercut. From blond to redhead to fringe-free to blunt bangs, see which stars have switched things up with a new look in 2012 and have your say on their new vs. old look.