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The Cinema Society and Details magazine hosted a screening of The Hangover last night at the Tribeca Grand, which was followed by an afterparty at the Soho Grand. Details editor Dan Peres, Cinema Society's Andrew Saffir, and Bradley Cooper and Justin Bartha, who both appear in the film, welcomed Rachel Roy, Amy Sacco (left), Nicole Miller, Will Arnett, Zach Braff, Gerard Butler, Molly Sims, Chris Meloni, Caroline Rhea, Alan Cumming, Shoshanna Lonstein Gruss, Albert Hammond Jr., Jill Hennessy, Jesse Eisenberg, Hilary Rhoda, Dan Abrams, Danny Masterson, Byrdie Bell, Kelly Bensimon, Rob and Marisol Thomas, Caroline Winberg, and Doutzen Kroes, Alexandra Richards, and Paula Abdul. [PMC, WWD, Wireimage, VF]

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Massimo Ferragamo hosted a dinner in honor of designer Massimiliano Giornetti at Ferragamo's Fifth Avenue flagship on Wednesday night. In attendance: Fabiola Beracasa, Alek Wek, Lake Bell, Gerard Butler, Euan Rellie and Lucy Sykes Rellie, Dan Abrams, Dan Peres, Bettina Zilkha, Bronson Van Wyck, Cristina Greeven Cuomo, Boykin Curry and Celerie Kemble, Frederic Malle, Marina Rust Connor, Roberto Bolle, Janina Joffe and Jessica Joffe, Chiara Clemente, and Ferragamo's US president Vincent Ottomanelli. [FWD, PMC, Wireimage]

• Noah Tepperberg and Jason Strauss's brand-new Avenue was the scene for a three-way birthday party on Wednesday. Turning up to watch Shoshanna Lonstein Gruss, Dani Stahl and Ali Wise blow out their candles: director Oliver Stone, Kate Hudson, Gerard Butler, Dylan Lauren and Paul Arrouet, designer Yigal Azrouël, Fabiola Beracasa, Coralie Charriol Paul, Lauren Santo Domingo, Alek Wek, Jill Kargman, Charlotte Ronson with mom Ann Dexter-Jones, Lake Bell, Dan Abrams, Andrew Saffir and Daniel Benedict, publicist Christian Leone, Stacey Bendet, Sky Nellor, and Josh Gruss, Shoshanna's husband. [PMC, VF, PMC]

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• GQ and Omega threw a bash on Wednesday to celebrate the 40th anniversary of man landing on the moon. Guest of honor Buzz Aldrin and GQ's Jim Nelson and Pete Hunsinger, welcomed Penn Badgley, Erin Lucas, Milo Ventimiglia, Jim Moore, Aubrey Plaza, Daniel Sunjata, and Aldrin's wife, Lois, to Omega's Fifth Avenue flagship. [PMC, NYDN, Wireimage]

• Taste of Summer 2009, which benefits the Central Park Conservancy, took place in the park on Wednesday eve. Some of the 900 people on hand to sample food from about a dozen restaurants: Conservancy chief Douglas Blonsky, Danny Meyer, Gillian and Sylvester Miniter, B. Smith, Susan Shin, Sandra Lee, Alexandra Lebenthal and Jay Diamond, Johanna and Frederic Levy, Kristy and Jonathan Korngold, Suzanne and Bob Cochran, Alison Brod, Liz Lange, Dolly Lenz and Jenny Lenz, Mauro Maccioni, Bo Dietl, Jay Mandelbaum, Frederick Anderson and Douglas Hannant, Norman Selby, and New York City Parks Commissioner Adrian Benepe. [Manhattan Society, PMC, NYO]