Blake Lively is mourning her "fiercely loyal" and "brave" Gossip Girl costar Michelle Trachtenberg after her death at age 39.

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

Michelle Trachtenberg's breakthrough performance came with the 1994 TV show The Adventures of Pete & Pete on Nickelodeon ...

Actress Michelle Trachtenberg shot to fame as a child star at age 3, starring as Nona Mecklenberg on the hit Nickelodeon ...

Michelle Trachtenberg's death Wednesday left her former co-stars like Blake Lively, Rosie O'Donnell, Melissa Gilbert and ...

Michelle Trachtenberg's cause of death has been announced following her tragic death aged just 39. Known for her memorable ...

Buffy the Vampire Slayer star Michelle Trachtenberg has sadly passed away, aged 39. Her cause of death is still under ...

Michelle Trachtenberg, the actor known for roles in series including "Buffy the Vampire Slayer" and "Gossip Girl," has died.

Gossip Girl and Buffy the Vampire Slayer actress Michelle Trachtenberg, 39, was found dead Wednesday, February 26, in her New ...

Michelle Trachtenberg has died at age 39. The star of Gossip Girl and Buffy The Vampire Slayer passed away in her home. Here's what we know.

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Buffy The Vampipre Slayer and Gossip Girl star Michelle Trachtenberg has died at age 39. Here's everything we know about the ...