Connor Paolo of Gossip Girl celebrates a birthday today, and a big one. He's 21!

From the beginning, the actor has been a terrific addition to the Gossip Girl cast as Eric van der Woodsen, troubled but wise-beyond-his-years brother to Serena.

While he's always been a recurring character, Eric brings so much to the show we've grown to love. We wish him nothing but the best in his other pursuits.

Here are some photos of Connor in honor of the big day. Have a good one, C!

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.