From Kate Moss to Keira Knightley, Best and Worst Dressed of the Week (Photos)

Keira Knightley re-wears her wedding dress, Marion Cotillard is a lady in Dior, and Lady Gaga channels her inner-Disney princess. Plus, more best and worst dressed of the week.

Getty; WireImage; FilmMagic

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To celebrate the Charlotte Perriand collaboration at Art Basel in Miami, Michelle Williams wore a black and blue Louis Vuitton dress.

David Atlan/Vuitton

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Marion Cotillard, star of the "Lady Dior" campaign, attends the opening ceremony of the 13th Marrakesh International Film Festival on November 29 in a black and white polka-dotted gown by the designer topped with a sleek, side chignon.

Dominique Charriau/Getty

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Actress Shailene Woodley sports a loose, black-and-white snakeskin halter dress from Calvin Klein's Spring/Summer 2014 collection to the 23rd annual Gotham Independent Film Awards on December 2.

Monica Schipper/Getty

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To celebrate her upcoming cover for Playboy's 60th anniversary issue, Kate Moss arrives at Bookmarc in London on December 2 wearing a shimmering little black dress and a black-and-white striped, rabbit-fur coat, both by Marc Jacobs. She pairs her ensemble with black, pointed Christian Louboutin heels—aptly named ‘So Kate’ after the model.

Neil P. Mockford/FilmMagic

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Elegant, as usual, actress Allison Williams attends the Winter Ball for Autism at the Metropolitan Museum of Art on December 2 in a black gown with a lace bodice and tulle skirt and carries a black clutch, both by Oscar de la Renta.

Cindy Ord/Getty for Autism Speaks

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Leave it to Keira Knightley to pull off wearing her wedding dress three separate times. The actress attends the SeriousFun London Gala on December 3 wearing the same white vintage Chanel she wore when tying the knot in May.

Stuart C. Wilson/Getty

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Lea Michele looks chic in a long-sleeved, red-lace Dolce & Gabbana dress with Swarovski crystals and Christian Louboutin heels at L'Oreal Paris's Women of Worth event on December 3.

Paul Zimmerman/WireImage

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Actress Gabrielle Union attends the 2013 Alvin Ailey American Dance Theater's opening night benefit gala on December 4 sporting an emerald green, strapless Prada gown with a thigh-high slit and a large diamond necklace.

Ilya S. Savenok/Getty

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In one of her less outrageous ensembles, Lady Gaga walks through the Narita International Airport on December 3 wearing a simple white tee, black platform boots, and pants printed with, of course, the faces of Disney princesses.

Jun Sato/WireImage

From Kate Moss to Keira Knightley, Best and Worst Dressed of the Week (Photos)

The Fashion Beast Team