The 'Gossip Girl' star passed away in February 2025 at age 39, and her former cast members are reacting to the devastating loss.

Michelle Trachtenberg, an actress best known for her roles in "Buffy the Vampire Slayer" and "Gossip Girl," has died at age 39.

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.

Hollywood is mourning actress Michelle Trachtenberg, who died on Wednesday. She was 39. Trachtenberg, best known for roles in "Buffy the Vampire Slayer," "Gossip Girl," Disney's "Ice Princess" and more, is believed to have died of natural causes, police sources told ABC News.

The "Gossip Girl" and "Harriet the Spy" alum, who rose to fame as a child star, was found dead in New York City on Wednesday, according to police.

Blake Lively, Sarah Michelle Gellar and other stars remembered Trachtenberg’s work ethic and friendship in social media posts.

Michelle Trachtenberg’s producing partner, Casey Tebo, shared his final conversation with the “Gossip Girl” star before her shocking death. Trachtenberg passed away on Feb. 26 at the age of 39, as The Post exclusively revealed.

Michelle was thrown a lot of curveballs with her health, but she did her best not to let it get her down,” Michelle Trachtenberg's friend said

Gossip Girl star Michelle Trachtenberg was reportedly working on a screenplay based on the 2009 book 'Toy Monster' by Jerry Oppenheimer before her death