Friday

Caught in the Act!

10/31/2008 at 06:00 AM EDT

• Ashley Olsen, celebrating her coffee-table book release over champagne with sister (and co-author) Mary-Kate and her sometimes-boyfriend Nate Lowman. The group held their festivities at New York's Beatrice Inn. And a few tables down, Lindsay Lohan was letting loose with Samantha Ronson. "Lindsay was getting wild like the good old days," a source says. And, no, the groups never interacted.

• Anne Hathaway, lunching with a friend at Joan's on Third in Los Angeles. The Rachel Getting Married star sat outside with two friends, wearing tight jeans, a vest and cute fedora, and hung out for quite a while.

• Orlando Bloom, coming out for gay night at The Brig in Venice, Calif., with a guy friend. The British star was at the bar, having a drink – and a great time. "He was smiling, laughing and talking with his buddy," says an onlooker. The place was packed but Bloom and his pal stuck it out until past midnight.

• Katy Perry, celebrating her 24th birthday with a grisly and gruesome costume party at Siren Studios in Hollywood. The pop star dressed as Freddie Mercury. Why? "He's my icon," she told us at the bash. And Perry lined up plenty of thrills for the guests, which included friends Josh Groban and Cisco Adler. There was a photo booth that resembled a coffin, finger food and a little twist on the game bobbing for apples: Party guests could bob for body parts! Perry and her friends sipped on Malibu Rum cocktails and enjoyed birthday cake that resembled "a dead person." Said the singer: "It's pretty disgusting."

• Are they patching things up? Entourage star Adrian Grenier and former girlfriend Isabel Lucas, dining with a group of friends at Koi in Los Angeles. "He kept her close by his side all night," says a source.

• A CD release party with a religious twist? Rapper Q-Tip celebrated his new album The Renaissance at New York's Bowery Hotel with producer Mark Ronson, who emceed the Target bash and told the crowd it was like Q-Tip's "black Bar Mitzvah." Ronson then recited a Hebrew blessing as partygoers laughed.

• By REAGAN ALEXANDER, DAVID CAPLAN, JENNIFER GARCIA, JESSICA HERNDON, MARY MARGARET and ALYSSA SHELASKY

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