Where's The Party At?

--The stars of The Hills and The City celebrated their wrap party at NYC hotspot SL. East coast met West coast cast members, including Brody Jenner, Audrina Patridge,Lo Bosworth, Whitney Port, Roxy Olin and veteran cast member Erin Lucas. The crew enjoyed the night with SVEDKA cocktails.

--Gossip Girl star Leighton Meester joined bands including Boys Like Girls and Cobra Starship at NYLON Magazine's official after-party for the OP Fall Music Tour at 1Oak in NYC. The party goers mixed and mingled with the VIP crowd who enjoyed low-calorie MGD 64 beers and Hornitos Tequila specialty cocktails and danced to music spun by DJ Josh Madden.

--Aussie hunk Ryan Kwanten of HBO's True Blood spotted celebrating his 33rd birthday with friends at TAO nightclub. The star also hosted a party at club LAVO at the Palazzo hotel the following evening.

--Apl.de.ap from the Black Eyed Peas was celebrating his birthday with band-mates Fergie, Will.i.am and Taboo at Lucky Strike Lanes & Lounge in LA. The group was joined by T-Pain and Drake who all had fun dancing during the night in between their bowling turns.

--Pussycat Doll creator Robin Antin spotted with Matt Goss at the Playboy Club inside the Palms Casino Resort.

--Dancing With The Stars Joanna Krupa spotted at Club mur.mur at the Borgata Hotel Casino & Spa in Atlantic CityNJ where she celebrated her December Playboy cover. Joanna was spotted dancing all night with her friends.

-- Adrian Grenier spotted at the Zirh sponsored ‘Danny Clark’s Monday Nights’ event at Ainsworth, which raises money for under-serviced youth.