Chanel Pre-Oscars Dinner: Sienna Miller and Rosie Huntington WhiteleyWrapping up all the Oscars stuff with this post, it is worth mentioning that Brit girls Sienna Miller and Rosie Huntington Whiteley attended a Chanel dinner on Oscars weekend, dresses in Chanel. As usual, they brought their own distinct style to the event, whilst looking gorgeous. How do they do it?