SILENT NIGHT: Christina Ricci, being bombarded by the paparazzi after dinner at Il Sole in West Hollywood. No surprise, she declined to answer any questions about her recent breakup with former fiancé Owen Benjamin.
HAIR AFFAIR: Halle Berry, dressed casually in a Brochu Walker racerback top, getting her hair done at the Byron & Tracey Salon in Beverly Hills for her Revlon campaign shoot.
Which celeb couples were spotted partying together on Friday at a new Hollywood nightspot?
STARRY NIGHT: Lauren Conrad 'n' Kyle Howard and Jamie-Lynn Sigler 'n' Jerry Ferrara, along with Chace Crawford, Leona Lewis, Amanda Bynes, Kevin Connolly and Matt Morrison, helping talent manager and producer Eric Podwall celebrate his birthday at a party hosted by publicity poobah Rembrandt Flores at Jane's House.
PAGE-TURNERS: Claire Danes and fiancé Hugh Dancy, reading from Jay McInerney's collection of short stories, How It Ended, during a gathering of the Accompanied Literary Society at the Montauk Yacht Club's Ziegfeld Estate on Long Island, N.Y.
JERSEY GIRL: Paris Hilton, dancing to Lady Gaga's "Poker Face" and Journey's "Don't Stop Believing" during a late night out at mur.mur inside Atlantic City's Borgata Hotel Casino & Spa.
CHEERS! Brittany Snow and Wilmer Valderrama, congratulating will.i.am on the new Black Eyed Peas album and toasting him with champagne at the Greenhouse in NYC.
COLORING LOOK: Marcia Gay Harden, getting a Fake Bake airbrush tan at N.Y.'s Eve Pearl Salon.
HELPING OUT: Dancing With the Stars' Lacey Schwimmer and The Real Housewives of Orange County's Gretchen Rossi, attending the Trevor Project's third annual Reality Check event at Eleven in West Hollywood.
LADY EATS THE BLUE: Nicky Hilton, enjoying a blue velvet cupcake after purchasing about a dozen at Toast in Los Angeles.
GOT MILK? Mario Lopez, sipping Muscle Milk while taking surf lessons in Santa Barbara at the Oakley Learn to Ride surf camp.
SUNKISSED: Lost alum Maggie Grace, picking up sundresses and beach accessories at French Connection in Santa Monica, Calif.
—Reporting by Dahvi Shira and Giselle Ugarte
Make sure to check out even more celebrity sightings in today's Big Picture photo gallery!