Best Dressed This Week: Rooney Mara, Alexa Chung & Pippa Middleton

What a week it’s been for Rooney Mara. She wowed in four fab designer outfits – she’s definitely the one to watch in 2012. Alexa Chung worked her fashion magic over in New York rocking Marc Jacobs and Pippa Middleton has been wearing her favourite high street coat out in London. See all the best dressed celebrities of the week, right here…