â¢ Zac Efron had anything but a quiet Sunday night in Chicago: after a late dinner, the actor stopped in for a drink by the bar at Sunda before heading over to the Underground for the club's weekly dance party. Efron held court at a table near the deejay booth - but soon moved to the dance floor, where he got down to a five-minute medley of Michael Jackson tunes spun by DJ Rock City.
â¢ A dressed-up Lauren Conrad arrived early to MyStudio in L.A. to support a friend who was deejaying at the popular nightspot. The reality star and her friends took over a table by the deejay booth and immediately began chatting and giggling with each other. They also cheered when their favorite song - "California Gurls" by Katy Perry - was played. Conrad, who rarely hits the clubs anymore, said hi to friends after taking a lap around the room, and also requested songs from her pal at the turntables.
â¢ Newly single, Ryan Phillippe was definitely in a party mode at Teddy's inside the Hollywood Roosevelt Hotel, where he mingled with several female clubgoers. Sporting a tight gray T-shirt, the actor hopped on the dancefloor and started getting down with somebody while Samantha Ronson spun tunes from the deejay booth. The actor and his lady friend were flirting, but then Phillippe started focusing his attention on a brunette. The two talked closely, getting pretty hands-on with each other as they danced. At one point Phillippe, who had a vodka drink in his hands all night, made a lap into the hotel's lobby, where he chatted up a few more girls before returning to the club.
â¢ Pete Wentz celebrated the first anniversary of his Chicago bar Angels & Kings - and his love for wife Ashlee, who partied by his side. After performing in the Windy City with his band Fall Out Boy, Wentz headed to the bar, where he cuddled with his wife at their VIP table. The bassist soon headed to the deejay booth, where he dedicated Oasis's "Wonderwall" to Ashlee, singing along to the song and pointing at her across the room. And she returned the affection, mouthing "I love you" at her hubby and blowing him kisses.