Her role in Buffy the Vampire Slayer earned her three Saturn Award nominations and a Young Artist Award.
Beyond live-action roles, Trachtenberg lent her voice to Judy Reilly in the animated adult comedy Human Kind Of, which premiered on Facebook Watch. She also starred in films like Ice Princess (2005) and appeared alongside Zac Efron in 17 Again (2009).
Following the news, fans have taken to social media to share tributes and honor her legacy.

A Twitter user expressed their sorrow, saying, “RIP Georgina. What a legendary role.”
Another user was shocked by the news, writing, “39? That’s crazy. Such a beautiful and talented actress.”
Over on Instagram, someone commented on Trachtenberg’s most recent post—a red carpet photo she had shared just a week before her passing. They wrote, “Rest in peace Michelle, you crafted so many characters that many of us were connected to. You captivated us with unique stories. Thank you for sharing your life & talent with us. You’ll be missed. Big hugs to your family & friends. Although we’ll all miss you, we know their lives will be forever changed. We’re so sorry for their loss and sending extra love to them at this time.”
Another fan reflected on her career, writing, “She was so young!!! Rest in peace. We loved your movies growing up—Ice Princess, 17 Again, Harriet The Spy.”
Her Gossip Girl co-star, Ed Westwick, also paid tribute. In an Instagram story, the British actor wrote, “So sad to hear of the passing of @michelletrachtenberg. Sending prayers,” alongside a prayer emoji and a white heart.
If you are grieving and need support, you can reach out to GrieveWell confidentially at (734) 975-0238 or email [email protected].