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

Michelle Trachtenberg, a former child star who appeared in the 1996 “Harriet the Spy” hit movie and went on to co-star in two ...

Michelle Trachtenberg, star of film and television projects like 'Gossip Girl' and 'EuroTrip,' has died at the age of 39, ...

Michelle Trachtenberg's first credited role was on Nickelodeon's 'The Adventures of Pete & Pete,' and it's the role that our ...

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

Actress Michelle Trachtenberg, known for her roles in "Harriet the Spy" and "Gossip Girl," has died. She was 39.

Gossip Girl' fame actor, Michelle Trachtenberg was recently found dead at her New York City apartment, which has left ...

Blake Lively is paying tribute to her late co-star. Michelle Trachtenberg, 39, died on Wednesday, leading many fans and celebrities alike to honor her memory, including many of her co-stars across ...

Blake Lively, who co-starred with Michelle Trachtenberg on the teen drama "Gossip Girl," paid tribute to the late actress on ...

Michelle Trachtenberg's credits include performances in 'Harriet The Spy,' 'Mysterious Skin' & 'Buffy The Vampire Slayer' ...

Blake Lively posted a tribute on her Instagram Story for 'Gossip Girl' Co-Star Michelle Trachtenberg after her death.