Michelle Williams was arm in arm with a girlfriend this afternoon for a walk in Manhattan. She's been lying low since wrapping up promotion for Shutter Island back in February, and Michelle apparently took advantage of her downtime to get a haircut — her blond locks are lighter than ever and even shorter! Michelle will probably be bringing her new do overseas next week when her movie Blue Valentine with Ryan Gosling screens at the Cannes Film Festival. It doesn't come out in theaters until December, but before then Michelle will be busy working on other projects like Noah Baumbach's The Emperor's Children and Sarah Polley's Take This Waltz.