Michelle Trachtenberg.

Trachtenberg was born in New York City on October 11, 1985, and grew up in Sheepshead Bay, Brooklyn. She attended Isaac Asimov Public School 99 and later Notre Dame High School, where she graduated with awards in Social Studies and Religion and was named under the California Scholarship Federation. Her mother Lana and father Michael supported her early interest in acting. She began appearing in commercials at age 3 and studied ballet as a child, which later helped her skating for Ice Princess.

Her first major role was as a recurring character on The Adventures of Pete & Pete at age 10. She starred in Harriet the Spy in 1996. Her breakthrough came in 2000 when she joined Buffy the Vampire Slayer as Dawn Summers, sister of Sarah Michelle Gellar’s Buffy. Gellar recommended her for the part. She later played Georgina Sparks on Gossip Girl from 2007 onward, a fan-favorite role. In 2005, she starred in Ice Princess, using her ballet training for the skating sequences. She guest-starred on Law & Order, Criminal Minds, House, and NCIS: Los Angeles. In 2023, she voiced a role in the Apple TV+ animated series Harriet the Spy.

Trachtenberg kept her personal life largely private. She was close friends with her Buffy co-stars Sarah Michelle Gellar and Seth Green. She never married and had no children. She underwent a liver transplant shortly before her death in 2025. She enjoyed swimming, ice skating, and writing poems.

Trachtenberg is remembered for her iconic teen roles in the late 1990s and 2000s. As Dawn Summers, she became a central character in the Buffyverse, and her portrayal of the troubled teenager resonated with fans. She left a mark on science fiction and drama genres. In 2025, news of her death from diabetes complications at 39 prompted widespread tributes from co-stars and fans. She was cremated without a funeral or memorial service, per her wishes. She is most remembered as Dawn Summers on Buffy the Vampire Slayer.