Blair and 5-month-old son Arthur laugh it up in Beverly Hills. Plus: Russell Brand, Rihanna, Katy Perry and more
Credit: Richie Buxo/Splash News Online
Updated: Tuesday Jan 17, 2012 | 05:00 PM EST
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Elizabeth Banks looks picture-perfect in Andrew Gn outside the Late Show with David Letterman studios Monday in New York, where The Hunger Games actress talked up her new projects.
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