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Sightings: Britney Spears Gets Her Shop On

Mon., Dec. 8, 2008 11:50 AM PST by Marc Malkin

RAMEY PHOTO

BRAND NAME: Britney Spears, surrounded by plenty of security as she shopped at Kitson and dined at Katsuya at the Americana at Brand mall in Glendale, Calif.

GUYS & DOLLS: Katy Perry, giving an impromptu performance at Saturday gay night Cherry Pop at West Hollywood's Ultra Suede, after Solange Knowles performed as part of the Levi's Unbuttoned tour.

What was Jennifer Aniston doing with John Mayer on Saturday night? And who were Justin Timberlake and Jessica Biel partying with this weekend? Read on to find out!

SHE'S WITH THE BAND: Jennifer Aniston and John Mayer, looking "happy and cuddly together" at the singer's concert afterparty at Seven Grand in downtown L.A.

SEASON'S GREETINGS: Justin Timberlake and Jessica Biel, along with Christina Aguilera, Kenny Chesney, Kate Hudson, Matthew Rhys and Bradley Cooper, hitting producer Jennifer Klein's Kahlúa-sponsored holiday party in L.A.

LO TIMES: Hilary Duff, dancing to the band at the weekly Lo Hi Fi party at Bardot in Hollywood.

BAND OF BROTHERS: Joel and Benji Madden, checking out the Oasis show at the Palms Casino Resort's Pearl Concert Theater in Las Vegas.

ON THE RUN: Hilary Swank, being chased by the paparazzi as she was snuck out a side door at MilkShop.com's Winter Wonderland event in L.A.

SUPPER CLUB: Laurence Fishburne, having dinner at Hollywood's Magnolia restaurant across the room from Tommy Lee.

DRINK UP: Nick Lachey, enjoying a couple of beers with a buddy in Whiskey Blue at the W Hotel in L.A.