Thursday

Caught in the Act!

10/09/2008 at 06:00 AM EDT

• Lindsay Lohan and girlfriend Samantha Ronson, attempting to stop into the laid-back Melrose Avenue watering hole The Snake Pit. Alas, the couple's evening was cut short at the door. Why? Lohan, 22, and Ronson, 31, were unable to produce ID – and the doorman was forced to turn them away. Meanwhile, inside, Kirsten Dunst happily hung with her friends.

• Diddy, sitting in the second row at Madonna's Madison Square Garden concert alongside Rosie O'Donnell and Michael Kors. The music mogul, whose arm is in a sling, spent much of the show seated, texting away on his iPhone. But when Madonna sang "You Must Love Me," Diddy leapt to his feet and threw his hands – well, hand – in the air, screaming, "We love you!" The rapper piped up again, laughing hysterically when one of Madonna's flamenco dancers began tap dancing. And O'Donnell got some attention, too: When Madonna fell into the lap of one of her dancers, she looked over her shoulder and winked at her good friend.

• Michael Phelps may stay mum about his personal life, but at a bash celebrating New York's Bowlmor Lanes' 70th anniversary, the Olympian's actions spoke volumes. While he bowled with a group of pals, college friend (and petite brunette) Marina Katz never left his side. In fact, the pair enthusiastically exchanged kisses on the cheek and hugs whenever they scored strikes. Phelps also sat close to his friend, keeping his arm around her.

• Serena Williams isn't above a good bargain. The tennis champ ducked into L.A.'s Beverly Center, stopping at Forever 21 with a female friend and a teenage girl. "Serena wanted to take a look at an accessories rack across the way and made sure to check in on the young girl who was standing in line," says a fellow shopper. Apparently, a kiosk of bangles and earrings caught Williams' eye.

• MTV's bisexual bachelorette Tila Tequila took her party to West Hollywood's Coco de Ville, grabbing a booth right in front of the deejay, which she shared with Danity Kane singer D. Woods. Tila was in the mood to dance, though, and barely sat down all night, getting busy to tunes like ZZ Top's "Sharp Dressed Man."

• Just hours after Misty May-Treanor announced that an injury was forcing her to leave Dancing with the Stars, much of the DWTS crew hit L.A. club Coco de Ville to celebrate ex-contestant Jeff Ross' DVD Jeff Ross No Offense: Live from New Jersey. While Cheryl Burke helped Ross blow out the candles on a sheet cake at the Dewars White Label-hosted bash, pals Dane Cook, Lance Bass and former dancer partner Edyta Sliwinska gathered around to serenade the funnyman with "For He's a Jolly Good Fellow."

• By K.C. BAKER, DAVID CAPLAN, MARK DAGOSTINO, MARISA LAUDADIO, MARY MARGARET and ABBY STERN

Want to see where the celebrity action goes down? Tour all the Celebrity Hot Spots.

Wednesday's Caught in the Act >