From Kristen Wiig to Kim Kardashian, Best & Worst Dressed of the Week (Photos)

Lupita Nyong'o stuns in red Elie Saab, Amy Adams covers up in black lace, and Kim Kardashian looks like a banana. Plus, more best and worst dressed of the week.

Getty for Van Cleef & Arpels; Jason Merritt/Getty; Getty for DIFF; Ilya S. Savenok/Getty

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Looking more covered up than her American Hustle character, Amy Adams attended the New York screening of the film on December 8 in a black, semi-lace gown from Elie Saab's Spring/Summer 2014 collection with Neil Lane jewelry and Christian Louboutin pumps.

Ilya S. Savenok/Getty

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Dressed in embellished, light blue, tan, and black Valentino Couture, Diane Kruger attended the European Film Awards in Berlin on December 7.

Anita Bugge/WireImage

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Blake Lively celebrated the redesign of Van Cleef and Arpels' redesigned flagship store in NYC on December 10 in a lace black slip dress with white flower embroidery from Marchesa's Spring/Summer 2014 collection. She accessorized with Gucci shoes and jewelry from the company.

Neilson Barnard/Getty for Van Cleef & Arpels

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Breakthrough style star of 2013 Lupita Nyong'o sported a red statement dress to the Paris premiere of her film 12 Years a Slave on December 11. The lace and sequined Elie Saab frock was complimented by soft David Yurman earrings, red, pointed-toe Nicholas Kirkwood heels, and natural make-up.

Francois Guillot/AFP/Getty

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For Rooney Mara, it's either black or white. The actress opted for the latter this time, wearing a structured, one-shoulder Lanvin gown to the Oxfam Charity Gala in Dubai on December 11.

Gareth Cattermole/Getty for DIFF

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Kristen Wiig looks so...girly and feminine. The funny-girl wore a Martin Grant dress clad with a strapless, geometric, black and white bodice and black skirt to the December 11 premiere of The Secret Life of Walter Mitty. She paired her neutral ensemble with a black manicure and gold Manolo Blahnik shoes.

Franziska Krug/Getty

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Looking, of course, like she doesn't care about her appearance—or the event, for that matter — Kristen Stewart, the new face of Chanel, attended the brand's pre-fall 2014 event in Dallas, Texas on December 10 wearing a grayish-blue cropped sweater with orange, wide-leg leather pants. You do you, K. Stew.

Cooper Neill/Getty for Chanel

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Talk about overkill. Kim Kardashian attended The Hollywood Reporter's annual Women in Entertainment breakfast on December 11 in a Lanvin dress, Max Mara coat, and Tom Ford heels that were all (too) yellow.

Jason Merritt/Getty

From Kristen Wiig to Kim Kardashian, Best & Worst Dressed of the Week (Photos)

Lupita Nyong'o stuns in red Elie Saab, Amy Adams covers up in black lace, and Kim Kardashian looks like a banana. Plus, more best and worst dressed of the week.

The Fashion Beast Team