PARTY PATROL: Lindsay Lohan, sipping Red Bull last night at BondSt Sushi in Beverly Hills, where girlfriend Samantha Ronson was deejaying a party for the Christian Dior men's clothing line. Across town, at the same time, Adam Levine partied at Foxtail.
SHOTS IN THE DARK: Avril Lavigne, doing Patrón shots with, um, Brandon Davis at Bardot in Hollywood?! Also at the club were Paris Hilton, Jesse McCartney, and Rachel Leigh Cook.
THE LOVE DOUG: Maybe-new couple Amanda Bynes and new Hills castmember Doug Reinhardt, getting cozy two Tuesday nights in a row at Apple Lounge in West Hollywood.
ROOM MATES: Uma Thurman and fiancé Arpad Busson, attending the 10th anniversary gala for children's charity Room to Grow in New York City.
DO-GOODERS: DJ AM and Jack Osbourne, hitting 12 Angels’ Halo Fashion 2008 charity event at Dr. Tea's Tea Emporium in West Hollywood, where Ashley Hamilton served as master of ceremonies.
EIGHT IS ENOUGH: Milk star Sean Penn and his director Gus Van Sant, hanging at Bungalow 8 in NYC with Josh Lucas, Terrence Howard and Michael Stipe.
SHOWER TIME: Brody Jenner, sweating big-time during a workout at Equinox gym in West Hollywood.
CLUB KID: Wilmer Valderrama, chatting with a bunch of pals at One Sunset in L.A.
GOOGOO 4 GAGA: Lady GaGa, performing at the Pretty Boy Promotions party at Apple Lounge in West Hollywood for clubgoers like Josh Henderson and Sean Stewart.
WATER BOY: James Blunt, performing at a private home in Chappaqua, N.Y., during Condé Nast Media Group and Lexus' event for the Waterkeeper Alliance eco-salon.
COMING UP
TREE TOPPER: David Archuleta performs this Saturday at the lighting of the Hollywood Christmas Tree at the Hollywood & Highland complex, during a VIP prereception benefiting children's HIV/AIDS organization One Heartland.
TAKE A STAND: Mandy Moore and Dave Annable will be at Kitson in West Hollywood on Dec. 10 to host the launch of a collection of celebrity-designed merchandise benefiting Stand Up to Cancer.
—Additional reporting by Dahvi Shira