The 'Gossip Girl' star passed away in February 2025 at age 39, and her former cast members are reacting to the devastating loss.

Momsen, who played Jenny Humphrey on Gossip Girl, shared several photos of Trachtenberg over the years on Instagram. “In shock…When I met this girl 17 years ago I knew we’d be friends..she was smart ...

Gossip Girl' ran for six seasons and starred Blake Lively, Leighton Meester, Penn Badgley and Ed Westwick. Here's what the ...

Waisman/Getty Images Entertainment/Getty Images Funnily enough, Meester being a fashion rebel — in black, no less — was reminiscent of another Gossip Girl character entirely: Jenny Humphrey.

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 ...

“Gossip Girl here, your one and only source into ... Nate Archibald and Blair Waldorf – and side characters Vanessa Abrams and Jenny Humphrey. Only when the show ended in 2012 (yes, it ...

After Michelle Trachtenberg suddenly died Feb. 26, her Gossip Girl costar Taylor Momsen recalled their bond in a heartbreaking reflection.

Josh Schwartz and Stephanie Savage, Gossip Girl co-creators ... And Taylor Momsen, the ever-iconic Jenny Humphrey, shared another photo of Michelle to her Instagram story as well.

Sending prayers." Taylor Momsen, who played Dan Humphrey's little sister Jenny Humphrey on Gossip Girl, remembered meeting Trachtenberg when she was just a teenager. "When I met this girl 17 years ...