Gossip Girl: Gossip Girl here, welcoming you to the New Year. When Manhattanites who flew south for the sun return to their Park Avenue perches. Which means I have a lot of catching up to do. Word is, Serena van der Woodsen tangoed in the New Year in the plazas of Buenos Aires. Guess that…

GG: On the Upper East Side it's easy to think the world is exactly as it appears. Refined. Elegant. Imposing. But sometimes all it takes is a little key to open the door to the wild side. Blair: Good catching up. Blair: Enough with the blackmail. Aren't you bored already? I can't avoid Nate forever.…