updated 04/28/2008 AT 01:00 AM EDT

originally published 04/28/2008 AT 01:00 AM EDT


House's JENNIFER MORRISON turned 29 with 15 pals at Hard Rock Hotel & Casino Las Vegas's Body English, where she danced until 3:30 a.m. shouting, "This is the best birthday ever!" EDDIE MURPHY was in Sin City at the Bank at the Bellagio—his 47th-b-day cake was adorned with his movie stills. CARMEN ELECTRA, 36, blew out cupcakes at Hollywood's Temporary Spaces. MARIAH CAREY hit DA BRAT's 34th at Prive Las Vegas where deejay NICK CANNON got cozy with Carey, who shared a private jet with him from L.A.! Gossip Girl's LEIGHTON MEESTER rang in her 22nd at N.Y.C.'s Bungalow 8. Notably absent—and fueling rumors she's on the outs with the cast—were a few GG costars, who opted for the SNL afterparty instead (see below).


ASHTON KUTCHER hosted April 12's Saturday Night Live and later hit N.Y.C.'s Hill Country with the cast and wife DEMI MOORE. JONAH HILL hit on Gossip Girl's BLAKE LIVELY, who came with new GG costar MICHELLE TRACHTENBERG. SNL's ANDY SAMBERG kept guests laughing, but American Idol's just-booted MICHAEL JOHNS was the main event. "There was a huge crowd around him," says a source. At 3:45 a.m. the gang went to the Cutting Room for an after afterparty where Johns sang "Dream On" (with Kutcher as backup!), telling revelers, "This song got me thrown off Idol."


LAS VEGAS 4/12: Chace Crawford chatting up a waitress at the Tao Beach Season Opening. With him was sister Candice, who competed in the Miss USA pageant. L.A. 4/6: Rocking with her TV hubby, James Denton, Teri Hatcher took the mic, fronting for the Band from TV at Comedy for a Cure. A rep says she may be back for an encore.

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