‘Gossip Girl’ and ‘Buffy’ Actors Mourn Michelle Trachtenberg

News of Michelle Trachtenberg’s death at 39 on Wednesday sent shock waves through Hollywood, especially among actors who worked with her on movies like “Harriet the Spy” and the beloved TV shows “Buffy the Vampire Slayer” and “Gossip Girl.”

Blake Lively

Lively, who played Serena van der Woodsen on “Gossip Girl,” called Trachtenberg “electricity” and shared a photo on Instagram of the first day they met. She also praised the work ethic of Trachtenberg, who played Georgina Sparks in 27 episodes of the show.

“Everything she did, she did 200%,” Lively wrote in an Instagram story. “She laughed the fullest at someone’s joke, she faced authority head on when she felt something was wrong, she cared deeply about her work, she was proud to be a part of this community and industry as painful as it could be sometimes.”

Sarah Michelle Gellar

Gellar, the star of “Buffy the Vampire Slayer,” shared a stack of eight photos with Trachtenberg, who played Dawn Summers in more than 60 episodes of the show. One photo showed Buffy embracing Dawn in an episode titled “Forever.”

“Michelle, listen to me,” Gellar captioned the photos, referring to a famous “Buffy” quote. “Listen. I love you. I will always love you. The hardest thing in this world, is to live in it. I will be brave. I will live… for you.”

Chace Crawford

Crawford praised Trachtenberg as one of a kind and recalled her strong presence on the set of “Gossip Girl,” where he played Nate Archibald. “I remember her coming on set for the first time and just absolutely owning it,” he wrote on Instagram. “She was a force of nature and just so, so unapologetically funny and magnetic.”

Alyson Hannigan

Hannigan, who played Willow Rosenberg on “Buffy the Vampire Slayer,” said on Instagram that Trachtenberg “brought a loving energy to the set.”

J. Smith-Cameron

Smith-Cameron, who also starred in the 1996 movie “Harriet the Spy,” told People that the young actress was excited to lead her first film at the age of 11. “Her natural ebullient nature was ratcheted up into giddiness as she tried to learn how to handle all that came with that,” she said.

Additional Tributes

Tributes also poured in from Melissa Joan Hart, Chris Colfer and Kenan Thompson. Rosie O’Donnell, who worked with Trachtenberg on “Harriet the Spy,” told People that the younger actor had “struggled the last few years” without providing specifics.