04/22/2009 AT 06:00 AM EDT
, texting and talking animatedly
during her late-night family dinner with mom Dina
and sister Ali
at STK in West Hollywood. When she wasn't on her phone, Lohan was
busy engaging with her sister and mother, a witness tells us,
adding that the family was in a "great mood."
and his New Moon
costar Kristen Stewart
hang out even when they're not
filming! The duo recently stopped by Vancouver's Opus Hotel for cocktails
and dinner at the hotel bar and looked "relaxed" during their night out, says an
, having a low-key dinner with Josh Lucas
at Little Giant in New York City's Lower East Side. "They've been coming here since before people even knew they were a couple," a source says of the
pair, who sat relatively unnoticed in the corner.
, bringing along his own
beer – a Pabst Blue Ribbon! – while shooting a segment for The Hills
at L.A.'s 8 oz. Burger Bar. But the reality star asked for the lowest calorie burger, and ate the grass-fed patty during the shoot.
, celebrating her agent Richard Weitz's
40th birthday during a Belvedere IX-hosted bash at a private home in the Hollywood
Hills. The 30 Rock
star spent the evening chatting with her musician husband Jeff Richmond
, while Jamie-Lynn Sigler
hung with boyfriend Jerry Ferrara
. "They were cuddling and sharing cocktails," a source says.
Adam "DJ AM" Goldstein
, speaking to a journalism
class at the University of Southern California for nearly two hours about
his gastric bypass surgery, his new MTV reality show, his life as a
celebrity deejay and the plane crash
that he said changed his life. DJ AM also shared that he has kept notes passed his way while deejaying over the years, joking that he may turn his collection into a coffee-table book called Hand it to the DJ
By CARLOS GREER, CHRISTINE KILPATRICK, LESLEY MESSER, EUNICE OH and CALLIE SCHWEITZER
Want to see where the celebrity action goes down? Tour all of the Celebrity Hot Spots. Tuesday's Caught in the Act >