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

Blake Lively, Leighton Meester, Eric Daman and Ed Westwick at an event on Jan. 12, 2010, in New York City. (Jamie McCarthy/WireImage) Rosie O’Donnell, Trachtenberg’s “Harriet the Spy ...

Blake Lively, Sarah Michelle Gellar and others who worked with Michelle Trachtenberg remembered the “loving” and “electric” ...

Michelle Trachtenberg, famed for roles in Harriet the Spy and Buffy the Vampire Slayer, died at 39. Found unresponsive in her ...

Blake Lively, Sarah Michelle Gellar, David Boreanaz, Ed Westwick, Kim Cattrall, Kenan Thompson, Melissa Joan Hart and more ...

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

Blake Lively, Sarah Michelle Gellar and other stars remembered Trachtenberg’s work ethic and friendship in social media posts ...

Michelle Trachtenberg, the actor known for “Gossip Girl,” “Buffy the Vampire Slayer” and “Harriet the Spy” died Wednesday.

RELATED: ‘Buffy,’ ‘Gossip Girl’ & ‘Harriet The Spy’ Co-Stars Mourn Michelle Trachtenberg’s Death: Blake Lively, Chace Crawford, Kim Cattrall & More Pay Tribute Trachtenberg’s other ...

Michelle Trachtenberg was found unresponsive at her home in New York City and was pronounced dead at 39. Over the years, ...

Blake Lively, Sarah Michelle Gellar and other Hollywood figures are paying tribute to Michelle Trachtenberg, who died at 39.

Blake Lively broke her social media silence ... The actress was best known for her roles in “Buffy the Vampire Slayer,” “Harriet the Spy,” “EuroTrip” and “Ice Princess.” ...