12/23/2009 AT 06:00 AM EST
Let the holiday parties begin! Jake Gyllenhaal
braved the snowy New York City weather for a guys' night out at the Smyth Tribeca hotel, where Justin Theroux, Mark Ronson
and Scott Campbell
were throwing a bash to benefit God's Love We Deliver, an HIV/AIDS charity. The single actor chatted the night away with Matt Dillon
and they seemed like they were having a great time, a source says. Ronson, meanwhile, provided the evening's soundtrack and guests like Josh Hartnett
and Mary-Louise Parker
danced the night away.
and Eddie Cibrian
cheered on a good friend who performed with the Gay Men's Chorus of Los Angeles. The happy couple caught the holiday concert at the Alex Theater in Glendale, Calif. Though they slipped out before the curtain fell on the final encore, an onlooker says they really enjoyed the show.
ventured right over to pal Kevin Connolly
's table at L.A. nightspot Voyeur, where she poured herself a drink and lit up a cigarette. The starlet was busy whispering with girlfriends, though she also chatted with the Entourage
star, who was later joined by good pal Leonardo DiCaprio
. The actor arrived wearing his standard look – a baseball cap, slung low – and lit up a cigar, which he enjoyed with a cocktail.
Was he buying something for Anna Paquin
? True Blood
star Stephen Moyer
was spotted doing some last minute shopping at Williams-Sonoma on Montana Avenue in Santa Monica, Calif., before heading outside to take a phone call. Nearby, Jessia Alba
stopped by the Anat B. boutique at the Westfield Century City mall, taking along hubby Cash Warren
and adorable daughter Honor Marie
By JENNIFER GARCIA, MAUREEN HARRINGTON and LISA INGRASSIATuesday's Couples Watch >