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

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

Friends and costars of Michelle Trachtenberg are remembering the actress with touching tributes after her passing on ...

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

Blake Lively and Sarah Michelle Gellar are among those remembering the “deeply sensitive” Michelle Trachtenberg, who was found dead in her New York City apartment Wednesday at age 39.

After news of actress Michelle Trachtenberg’s death was made public, friends and former co-stars have shared stories of ...

FILE - Michelle Trachtenberg appears at the Critics' Choice Television Awards in Beverly Hills, Calif., on June 19, 2014 (Photo by Richard Shotwell/Invision/AP, File) ...

Buffy the Vampire Slayer" star Sarah Michelle ... herself.” — Blake Lively, Trachtenberg's ”Gossip Girl" co-star, on Instagram. “Rest in peace sweet Michelle” — Kim Cattrall on Instagram.

Sarah Michelle Gellar, Taylor Momsen and Blake Lively are among those paying tribute to Michelle Trachtenberg, who died Wednesday. Trachtenberg was found in her New York apartment “unconscious ...