Best Celebrity Style | Nov. 9, 2012

Kate Middleton brought black-tie glamour in Temperley, Cameron Diaz gave us one very chic red-carpet appearance in Stella McCartney, and Jessica Alba wowed in Valentino at an LA gala — but these are just three of the best of the week's best. Inside, there's more from our favorites, some more casual — like the ever-polished Olivia Palermo running errands in sophisticated Fall layers and over-the-knee boots — and even more of the glammed-up variety (all the better to supply our holiday dressing inspiration). For all the details on this week's best dressed, keep clicking.