Mel B's Nude No-No, Rihanna's Frightening Fur + This Week's Worst-Dressed

Allison Williams 2014 Vanity Fair Oscar Party

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Analeigh Tipton

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Keira Knightley

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Melanie Brown

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Rihanna at Paris Fashion Week

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Cara Delevingne at Paris Fashion Week

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Shar Jackson

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Ed Westwick

[Photo Credit: Splash News]

Skylar Grey

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The Face star Naomi Campbell

[Photo Credit: Splash News]

The Oscars are over and Paris Fashion Week is wrapping up, which means we can finally stop pretending the ridiculous contraptions worn by some the world's biggest stars are soon to be "on trend." Rihanna has been in the City of Lights all week, hanging out with Oscar winners and breaking out dozens of outfits that would make a marathon runner stop in his or her tracks. Her short hair looks great, the bold lip is on point, but she's still had some missteps.

RiRi's partner in crime Cara Delevingne proves supermodels really do benefit from having designers dress them while Girls star Allison Williams let fellow Oscar partygoers know how much she likes the color pink. (It's a lot.) Actress Shar Jackson was a woman on the prowl at the Mr. Peabody & Sherman premiere in Los Angeles, and Ed Westwick L.A. club attire makes us think he may be lost without his Gossip Girl costumer designers. Or is this just Chuck Bass casual wear? For tips on what not to try at home, look no further than the gallery above where stars like Melanie Brown, Keira Knightley and more are giving us headaches with their startling fashion choices.

[Photo Credit: Getty Images]