Michelle Trachtenberg's death at 39, which definitely took the public by surprise. Celebrity tributes to Trachtenberg have ...

Blake Lively and Alyson Hannigan are among the former "Gossip Girl" and "Buffy" actors mourning the death of their one-time ...

Michelle Trachtenberg's former co-stars from “Gossip Girl” and "Buffy the Vampire Slayer" paid tribute to the actress ...

Lively shared a photo of the day she met Trachtenberg, writing, "The world lost a deeply sensitive and good person" ...

Following the tragedy, Gossip Girl alumni—including Blake Lively, Chace Crawford, and Ed Westwick—paid tribute to ...

Giovanni Rufino / © The CW / Courtesy Everett Collection The cast and crew of Gossip Girl honored their former costar ...

The cast of Buffy the Vampire Slayer has paid tribute to their former co-star Michelle Trachtenberg, who died yesterday ...

Gossip Girl' alums Ed Westwick, Chace Crawford, Taylor Momsen, and Kevin Zegers paid tribute to Michelle Trachtenberg after ...

From former co-stars to fans, tributes are pouring in following the death of Gossip Girl star Michelle Trachtenberg.

Blake Lively paid tribute to her late 'Gossip Girl' co-star Michelle Trachtenberg, who passed away at 39. Lively described ...

Michelle Trachtenberg's 'Gossip Girl' co-star Blake Lively posted a tribute to the actress after news of her death.