TWILIGHT DINING: Katy Perry and Robert Pattinson, enjoying dinner and drinks last night at Il Sole in West Hollywood. No, they're not an item! They were there with eight other people helping a friend celebrate her birthday but sweetly agreed to pose for pictures with fans outside the restaurant before leaving in separate cars.
THE EX LIST: Paris Hilton and “New BFF” Brittany Flickinger, partying at Apple Lounge in West Hollywood. Also there: one of Hilton's many exes, Josh Henderson, with his current girlfriend.
What was Lauren Conrad doing with a man in uniform the other night? Keep reading to find out...
BEAR WITNESS: Lauren Conrad, posing with a Marine as she dropped off a teddy bear at Here Lounge in West Hollywood during "It's a Woody Christmas," event planner Woody Woodbeck's first annual Toys for Tots toy drive sponsored by Patrón and Dove chocolates.
CHILLIN' OUT: Jason Segal, star of Forgetting Sarah Marshall and How I Met Your Mother, drinking and smoking cigarettes with a buddy on the patio of Bar Marmont in West Hollywood.
DRUNK FOR CHARITY: Charity: Ball host Adrian Grenier, taking a shot of Grey Goose with every guest who agreed to pledge $5,000 to Charity: Water during a benefit event at Metropolitan Pavilion in NYC. Whitney Port and Olivia Palermo were also in the house being filmed for Port's new MTV reality show, The City.
ODD COUPLE: Kanye West and Bill Murray partying it up at Anchor Bar in NYC during music manager Devo Springsteen's birthday party. Murray hit the DJ booth to request James Brown and was "dancing all crazy," an eyewitness reports.
FAMILY AFFAIR: Jessica Alba and Cash Warren shopping with baby Honor at Slow on Melrose Avenue in Hollywood.
RAP UP: Designer Marc Ecko, throwing a party at his Cut & Sew showroom in NYC for artist Marco and the 25th anniversary of Run-DMC. He also debuted a new limited-edition T-shirt benefiting the Jam Master Jay Foundation.
BUSINESS WITH PLEASURE: Dirty Sexy Money costars Peter Krause, Billy Baldwin, Natalie Zea, Seth Gabel and Glenn Fitzgerald, having dinner at Comme Ça in L.A.
GOT MEAT?: Nelly Furtado, eating pulled-pork nachos and ribs at Southern Hospitality in NYC.
GIRL NIGHT: A casually dressed Leighton Meester, having drinks with some friends at Coco de Ville in L.A.
ACTION-PACKED: Julianne Moore presenting Diamond Information Center director Sally Morrison with an award for her commitment to HIV/AIDS at the 12th annual Treatment Action Group's Research in Action Awards at New York's Astor Center.
HOLIDAY MUSIC: Nick Cannon deejays Rockit Ranch Productions' Make-A-Wish Foundation party tonight at Chicago's Underground.
—Additional reporting by Dahvi Shira, Whitney English and Ashley Fultz