Kanye and Tilda Swinton Partied Together

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Paris hosted plenty of parties during this week's couture shows, starting with the Vogue Paris Foundation Gala on Monday with Marc Jacobs, Naomi Campbell, Lara Stone, and Joan Smalls. On Tuesday, Kanye West and Tilda Swinton hung out with Haider Ackermann at his dinner with Mytheresa.com, and in another corner of the city, Lancôme ambassadors Lupita Nyong'o, Julia Roberts, Penélope Cruz, and Isabella Rossellini celebrated the brand's 80th anniversary. Back in New York, Levi's launched its new women's denim collection with an exhibition by Petra Collins, where Joan Jett and Erin Wasson were among the crowd. The next night, Charli XCX and Tori Amos played in Paris for the tenth anniversary of Viktor & Rolf's famed Flowerbomb fragrance. Click through the slideshow for these highlights and more from the week's biggest parties, including Elle Fanning, Adrien Brody, and Jennifer Lawrence

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