Oscar Hopeful Anna Kendrick's Bubbly Celebration

Find out what George Clooney's Up in the Air costar was doing after her nomination, plus Julia Roberts and Cameron Diaz sightings

Let the Oscar celebrations begin!

Twilight star turned Up In the Air Academy Award hopeful Anna Kendrick toasted her nomination last night at RH restaurant at the Andaz Hotel in West Hollywood.

"She was with three friends," says a source. "They had drinks at the bar and then dinner with champagne and wine."

And just across the street at the same time, some more nominees were celebrating. An Inglourious Basterds group of about 13, including director Quentin Tarantino, Christoph Waltz and Eli Roth—but no Brad—got together at the Mondrian's Asia de Cuba for dinner and drinks.

Get more star sightings, including Julia Roberts and Cameron Diaz, after the jump...

PRETTY PICTURE: Julia Roberts, taking a photo at the Beverly Hilton Hotel with a group of fans, who were so starstruck and flustered that Ms. Roberts took control and happily told everyone where to stand and who should take the pic.  

WINNER'S WALK: Newly minted Golden Globe and SAG Award winner Drew Barrymore, hitting Chateau Marmont in West Hollywood, the same night Kristen Bell was there, as well as John Krasinski.

BAG LADY: Cameron Diaz, browsing Balenciaga handbags at Barneys in Beverly Hills.

NIGHT MOVES: Emmanuelle Chriqui and Cuba Gooding Jr., dancing to "In Da Club" by 50 Cent at Private Practice star Taye Diggs' 39th birthday party at Skybar in West Hollywood.

SIN CITY SLICKER: Ben Stiller, dining with pals at Nove Italiano inside the Fantasy Tower at the Palms Casino Resort in Las Vegas.

NECKING: Mary J. Blige, scooping up a blue Palladio turtleneck and a cap sleeve Yves dress from the Catherine Malandrino boutique in L.A.

BITE ME: Soon to be ex-Brothers & Sisters star Rob Lowe, lunching with a pal at Sports Club/LA Beverly Hills' eatery Oliver.

COMING UP

THE CAT'S MEOW: Nicole Scherzinger is scheduled to perform tomorrow night for SVEDKA Vodka's Adult Playground 2033 Event Series hosted by Perez Hilton and nightlife guru Allison Melnick, at Hollywood's Playhouse nightclub.

PIGSKIN PARTY: Rihanna's new boyfriend Matt Kemp is expected to be among the Super Bowl-partying guests on Friday night at ESPN The Magazine's NEXT event at Fontainebleau Miami.

—Additional reporting by Whitney English