Michelle Trachtenberg's death at 39, which definitely took the public by surprise. Celebrity tributes to Trachtenberg have ...

"Sending prayers," the actor behind Chuck Bass wrote.Ed Westwick is mourning the death of his Gossip Girl costar Michelle ...

"Michelle was one of a kind,” Crawford–who played Nate Archibald ... also took to Instagram to pay tribute to his Gossip Girl co-star shortly after the news broke of her death.

As the world mourns the loss of Trachtenberg, Crawford shared a slideshow of ... Ed Westwick who played Chuck Bass on Gossip Girl was among the first to memorialize Trachtenberg as he revealed ...

Hollywood heartthrobs Ed Westwick and Chace Crawford paid heartfelt tributes to their 'Gossip Girl' co-star Michelle ...

Michelle Trachtenberg's former co-stars from “Gossip Girl” and "Buffy the Vampire Slayer" paid tribute to the actress ...

News of Michelle Trachtenberg's death prompted tributes from her friends and former "Buffy," "Harriet the Spy," and "Gossip ...

Michelle Trachtenberg played Georgina Sparks on ‘Gossip Girl’ from 2008 to 2012, and became friendly with several costars ...

Blake Lively, Chace Crawford, Ed Westwick, and more 'Gossip Girl' stars honored Michelle Trachtenberg amid her untimely death. Read their sweet tributes, here.

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

Bell voiced Gossip Girl for all six seasons of the show that aired from 2007 to 2012, while Meester starred as Blair Waldorf ...

Taylor Momsen played Jenny Humphrey in the original Gossip Girl series, and also took to social media after learning about Michelle Trachtenberg's death. She posted a photo of the late actress on ...