It's been a stellar year for style. From opulence on the red carpet to effortless weekend chic, key players broke out of their comfort zones to impress and inspire with standout looks. Model and actress Liberty Ross turned to power dressing in the face of adversity, the Duchess of Cambridge won the critics' seal of approval for her perfectly judged choices on the Jubilee tour, and Gwyneth Paltrow found her fashion edge. Meanwhile, front-row fixture Alexa Chung continued to lead the pack with her off-beat ensembles, while newcomers Michelle Dockery and Joan Smalls wowed us with their photo-ready poise. We celebrate a year of dressing with personality, wit and elegance with a rundown of 2012's best-dressed women...