Cast members from Buffy the Vampire Slayer, Gossip Girl and more paid tribute to the actress.

Nicholas Brendon, Alyson Hannigan, David Boreanaz, and others paid tribute to their former costar after her tragic passing on ...

Michelle Trachtenberg is being remembered for the positive energy she brought to set by many of the stars she worked with ...

David Boreanaz and Ed Westwick are among Michelle Trachtenberg's famous castmates who have spoken out following her tragic ...

Buffy the Vampire Slayer stars have broken their silence on the death of their co-star, Michelle Trachtenberg, who played ...

News of Michelle Trachtenberg's death prompted tributes from her friends and former "Buffy," "Harriet the Spy," and "Gossip ...

The NYPD confirmed to PEOPLE that Trachtenberg was found "unconscious and unresponsive" in her Manhattan apartment on ...

Michelle Trachtenberg's co-stars and fellow celebrities are speaking out after the "Gossip Girl" and "Harriet the Spy" star ...

Blake Lively, Rosie O’Donnell lead tributes to Gossip Girl and Harriet the Spy star - Kim Cattrall, Kenan Thompson and ...

Michelle Trachtenberg’s boyfriend has spoken for the first time since the “Gossip Girl” actress’s sudden death. Jay Cohen, a ...

Buffy the Vampire Slayer stars Emma Caulfield, Alyson Hannigan, and Nicholas Brendon honored and remembered the late Michelle Trachtenberg.