Last night, Jessica Biel, Ashton Kutcher, Lea Michele and every single actor in the history of time attended the premiere of New Year's Eve, Valentino celebrated the launch of their virtual museum with SJP and Courtney Love, Mark Ronson and Phantogram hit the stage at the W Hotel Downtown and so much more. Last night's parties were all about the celebs. More»

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Last night W New York Downtown celebrated Mick Rock and his latest exclusive showing of rock 'n' roll photography at the hotel. The event, hosted by Michaelangelo L'Acqua, featured a live performance by Phantogram and a DJ set by Mark Ronson. Check out who was there!