Georgina was played by the actress Michelle Trachtenberg, who was found dead at 39 in her Manhattan apartment on Wednesday. Her performance as the teenage supervillain brought an arch flair to a character who was only a minor figure in the novels that were the basis for the show, but became a fan favorite onscreen.

Blair Waldorf? Serena van der Woodsen? Let's be real, the best Upper East Side mean girl was always Georgina Sparks on Gossip Girl.

The writer remembers the star's special touch on the beloved character The Gossip Girl family continues to share tributes to Michelle Trachtenberg. Both fans and those who knew her are reeling after the actress's sudden death at age 39.