Blair and Serena chat about the big debutante event coming up. Both of their dates are sort of up in the air ...

Dan Humphrey meets the grandmother of his love, Serena van der Woodsen. It doesn't go to well for our Brooklyn boy.

This is Serena's big debut, or so they say in Upper East Side circles. But will her knight in shining armor be there?

Dan Humphrey talks to Serena and Lily van der Woodsen. It is downright funny to watch him interact with Lily... and it melts the heart when he and Serena are together.

Serena and Blair have their differences, and certainly some things in the past have strained their relationship, but they remain close, and are in the process of working things out between one another.

Despite the efforts of Serena's evil grandmother, Dan sticks it out and wins the affections of Serena at the ball. It helped that Lily stood up for him - and herself - by swallowing her pride and admitting she'd been unfair.

Tonight is the night of the ball where Serena van der Woodsen makes her debut. But will Serena (played by Blake Lively) be the slightest bit happy about it when she learns what her mom and grandmother have been up to behind her back?

Serena van der Woodsen (Blake Lively) and Blair Waldorf (Leighton Meester) are two of the most scandalous, cutest girls on the Upper East Side. These old friends are also rivals at points - particularly when S' past indiscretions with B's boyfriend are discussed.

Serena van der Woodsen doesn't follow the hot new fashion trends ... she tells the world what those trends are gonna be. We love Serena.

For Dan Humphrey (Penn Badgley) and Serena van der Woodsen (Blake Lively), romance is in the air. Do the stars who play this great couple feel the same way in real life?

As always, Serena van der Woodsen (Blake Lively) lights up the screen on Gossip Girl. This photo is from "School Lies," episode 12 of the first season.

Serena van der Woodsen is certainly OMG worthy in "The Serena Also Rises," from the second season of Gossip Girl.