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

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

Michelle Trachtenberg - who has tragically died at the age of 39 - had a liver transplant just a few months before she passed ...

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

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

Hollywood mourns the loss of 'Buffy the Vampire Slayer' and 'Gossip Girl' actress Michelle Trachtenberg, who passed away at ...

Another celebrity who reacted to Trachtenberg’s passing is Kim Cattrall who shared the screen with the late actress in Ice Princess. Cattrall posted on Instagram a picture of her and Trachtenberg in ...

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

The 39-year-old American actress Michelle Trachtenberg, known for her roles in a number of TV series, including Buffy the ...

The Gossip Girl alum Blake Lively has paid a touching tribute to her 'fiercely loyal' friend, Michelle Trachtenberg.