Celeb Sightings: Zac Efron, Joe Jonas, Chord Overstreet, Emma Roberts : People.com

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Zac Efron
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Amanda Seyfried
Lindsay Lohan
Paris Hilton

Amanda Seyfried? Ryan Phillippe was spotted eating lunch – solo – at Comme Ça in L.A. "He seemed to be enjoying himself at lunch," an onlooker says. "But

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also seemed to get along well with Ushkowitz, and the two shared some girl talk. ? Lindsay Lohan was in high spirits during her low-key dinner with

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? Zac Efron and Joe Jonas – and their entourages – shared a prime table during a vaudeville-inspired performance by Beacher's Madhouse at the

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, as well as Paris Hilton. Roberts playfully touched Overstreet's arm while the group was standing in a circle, but otherwise dialed down the PDA. She

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