We're back again to deliver you some fresh Instagram pictures we spotted this week. We have sweet shots of REVOK and POSE's spray-paint on the Bowery Wall, Kate Moss on her way to Christie's, and Alec Baldwin attending a photography exhibit opening. Curator Hans Ulrich-Obrist, who recently Instagrammed Kanye West, shows us a pic of Martha Rosler, and someone captured the new Hanksy graffiti. From JR's misadventures with Pharrell and Mos Def to a shirtless Ai Weiwei, here are The Best Artist Instagrams of the Week.
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