Michelle Trachtenberg, known for her roles in Buffy the Vampire Slayer, Harriet the Spy, and Gossip Girl, has passed away at 39. She was found unresponsive in her New York City apartment on February 26, 2025. Her career began as a child actress, gaining fame in Harriet the Spy before starring as Dawn Summers in Buffy. She later played Georgina Sparks in Gossip Girl and appeared in films like Eurotrip and Ice Princess. Tributes from Hollywood highlight her warmth and talent. While the cause of death remains unclear, her legacy in entertainment lives on.