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]

The answering machine at Josh and Shoshanna Gruss' Upper East Side townhouse. (Bonus: The proper pronunciation of "Gruss" for those of you who have wondered.)

Angelina Jolie might think her new twins are pretty special now that she's earned a cool $14 million for the photo rights. But there are plenty of New York socialite moms who think their kids are pretty important, too. Will any of these kids turn into the Tinsley Mortimer or Peter Davis of 2025? Take you best guess at who these little youngsters are related to, then click through for the answers.