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1) At the New York premiere of spy thriller Traitor at the Regal Union Square last night, the film's stars Don Cheadle, Guy Pearce, Said Taghmaoui, and Mozhan Marno walked the red carpet along with director Jeffrey Nachmanoff, Busta Rhymes, Jesse Williams, Estelle, Aubrey O'Day, and Nicole Miller. [NYO/Wireimage]

2) Further downtown mayhem surrounded the opening of the Nike sportswear store at 21 Mercer Street: Giant electronic billboards and a marching band heralded the arrival of Roger Federer, Maria Sharapova, and Serena Williams, who were joined by Mark Ronson (who DJed), Annabelle Dexter-Jones, Spike Lee, Katy Perry, Richie Akiva, Q-Tip, Justin Theroux, Alan Cumming, Cory Kennedy, Lily Cole, Alexander Wang, and many others. [Teen Vogue/PMc]

3) Another sporty event was happening at The Greenwich Hotel, where Men's Vogue threw a US Open party for tennis star James Blake. The magazine's Jay Fielden and Marc Berger mingled with John Mayer, Adam Lippes, Derek Blasberg, and Bonnie Morrison. [Style.com/PMc]

4) On Tuesday night, Focus Features and the New York Public Library's Young Lions hosted the premiere of Hamlet 2 at the Tribeca Grand Hotel. In the audience of the Eric Eisner-produced film: Eisner's wife Stacey Bendet, the film's star Phoebe Strole, Fran Lebowitz, Moby, and Tom Colicchio. [The Daily/Zimbio]