Vince Flores/Celebrity Photo
12/01/2009 AT 06:00 AM EST
In Miami for Art Basel, New Moon
hottie Kellan Lutz
balanced art appreciation with his love of nightlife: Lutz went straight to Set Nightclub to hang with friends. "He was sipping vodka and cranberry juice at a VIP table," a source says, adding that Lutz was joined by a male pal. The two danced to house music, including songs by Lady Gaga
, partying for more than three hours. Waitresses swarmed his table since he was friendly, funny and, the source tells us, "a joy to wait on."
A low-key and bespectacled Justin Timberlake
took a work meeting over a cup of coffee at Lamill in L.A.'s Silver Lake neighborhood. The singer-actor sported horn-rimmed glasses, a fedora and jeans, as he chatted uninterrupted with writer-director Clay Tarver
star Ryan Kwanten
celebrated his 33rd birthday at Lavo in Las Vegas with a large red birthday cake. The Aussie and his posse partied into the wee hours of the morning, listening to DJ Vice spin at nearby Tao. Back at Lavo, Real Housewives of Orange County
star Gretchen Rossi
partied with beau Slade Smiley
and her newest castmate Alexis Bellino
and her hubby, Jim
. The four friends sat right by the deejay, but soon hit the dancefloor, grinding on each other and dancing all night.
Robert Downey Jr.
and his Sherlock Holmes
director Guy Ritchie
, catching up over dinner at East Restaurant & Lounge in Hollywood. The duo sat in a private "confessional-style" booth in the back of the restaurant, opting for many of the house signature dishes and keeping to themselves for their two-hour meal. Across the restaurant, though, Jason Segal
was in good spirits, joining the owners for dinner and drinks.
Days after filing for divorce
from actress Heather Ann McComb, James Van Der Beek
stopped by West Hollywood's Chateau Marmont with a petite, pretty blonde. The pair joined a table of five in a secluded section of the patio, and the actor pulled out the chair for her as they greeted everyone with hugs and handshakes. Though he was in good spirits and she was perky, there wasn't much flirting between the two. According to an onlooker, the table seemed like a group that knew each other.
By REAGAN ALEXANDER, JENNIFER GARCIA and LINDA MARXMonday's Couples Watch >