Getty Images, FILE Sarah Michelle Gellar is paying tribute to her late Buffy the Vampire Slayer co-star Michelle Trachtenberg after her death at age 39. Gellar took to Instagram on Thursday to share p

Blake Lively took to her Instagram Stories Wednesday evening to share a lengthy tribute to her “Gossip Girl” costar Michelle Trachtenberg. “This is the first day I met Michelle,” Lively wrote, sharing a photo of her and Trachtenberg on “Gossip Girl.

The death of former child star Michelle Trachtenberg has shocked the entertainment world, but some fans of the Harriet The Spy star had been concerned about her well-being prior to her unexpected passing.

PEOPLE confirmed the late actress' sudden death at age 39 Michelle Trachtenberg's sudden death is being felt across Hollywood. Several celebrities paid tribute to the Gossip Girl alum after the NYPD confirmed her death at age 39 to PEOPLE on Feb.

One year before her death at age 39, Michelle Trachtenberg shut down criticism about her appearance and health. In a post on Instagram at the beginning of 2024, the Gossip Girl actress wrote alongside a selfie: "Fun fact.

Amanda de Cadenet says Michelle Trachtenberg called her from a “hospital bed” before her death at age 39. The podcaster, 52, took to Instagram on Wednesday, February 26, to post a photo she’d taken of Trachtenberg when she was younger and mourn the loss of her longtime friend.

Gossip Girl alum Ed Westwick paid tribute to former costar Michelle Trachtenberg following her death at age 39. "So sad to hear of the passing of @michelletrachtenberg," Westwick, 37, wrote via his Instagram Story on Wednesday,

Michelle Trachtenberg’s cause of death has been ruled "undetermined" by the medical examiner. The actress was 39 when she was found dead in an apartment in New York City on Feb. 26.

Michelle Trachtenberg ’s mother spoke to her the night before she died, according to reports. The Gossip Girl star’s mother found her daughter, 39, dead in her New York City apartment on Wednesday.

Fans and friends alike are mourning the loss of Michelle Trachtenberg, who died this week at age 39. Sarah Michelle Gellar was among those sharing tributes to the actor, with whom she co-starred on Buffy The Vampire Slayer.

Sarah Michelle Gellar, Taylor Momsen and Blake Lively are among those paying tribute to Michelle Trachtenberg, who died Wednesday.