Amanda Seyfried Shows How It's Done On The Best-Dressed List

Bow down.

This week, we got schooled in the style department by some of our favorite Hollywood stars.

Amanda Seyfried showed us how to wear white in October, Naomie Harris mastered the busy dress and Gabrielle Union taught us the importance of a great coat.

Check out the best-dressed celebs of the week and let us know if you agree with our picks.

Wear white after Labor Day.
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Amanda Seyfried in Antonio Berardi: That bright white hue really warms up Seyfried's fair complexion and the interesting neckline gives her ensemble the perfect amount of visual interest. Her metallic heels and rosy pink lipstick just seal the deal.
You don't need to show a lot of skin to look sexy.
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Sienna Miller in Michael Kors: We love how this dress is the perfect marriage of Miller's boho style sensibilities, but also mixed in with her newfound glamorous side. We never thought a maxi dress with long sleeves could be so sexy, but here Miller is, proving us wrong.
A statement coat can make your entire outfit.
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Gabrielle Union in Suno: Union's killer statement coat is one of the best style tips for fall. If you invest in a great coat, it doesn't matter what you're wearing underneath, all the attention will be on your topper.
Sunglasses work with a fancier dress.
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Selena Gomez: We've been seeing the actress-turned-singer everywhere lately and she has been slaying the style game -- and this LBD is no exception. The long sleeves balance out the short hemline, the mules add just the right amount of flair and her reflective sunnies prove that she isn't messing around.
An asymmetrical hemline is always a fun way to change up your look.
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Rosie Huntington-Whiteley in Stella McCartney: We are so used to seeing the model in tight and short looks, so this is a refreshing change. While this dress is still sultry, it is in a different way than we're used to seeing. This look may be a little more covered up, but the asymmetrical hemline and neckline make it feel youthful.
If you're wearing a busy dress, pick a short hemline.
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Naomie Harris in Mary Katrantzou: The colors, the stripes and the mesh panel are what make this little dress a total home run.

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