The Best Dressed Celebs at London Fashion Week Fall 2012

From Alexa Chung to Kate Bosworth, check out the most fashionable stars at this season's London shows!

Rihanna arrives for the Stella McCartney Special Presentation at 13 North Audley Street during London Fashion Week Autumn/Winter 2012 on February 18, 2012 in London, England.
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Rihanna at Stella McCartney

It looks like Rihanna smuggled some va-va-voom into the Stella McCartney presentation. The songstress' neckline took a plunge in an ultra-sexy teal evening gown perfectly suited to her newly straight blond 'do. She finished the look with a gold choker and matching shoes that fully exploited that massive slit up the side of her dress.

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