The American actress, also known for her role in Gossip Girl, was confirmed dead after emergency medical services arrived at One Columbus Place, New York, following a call at about 8am on Wednesday, the city’s police department said.
Trachtenberg’s Gossip Girl co-star, Ed Westwick, who played Chuck Bass on the show, said he was “sending prayers” in a post to his social media, featuring a picture of her as Georgina Sparks.
The actress, who was born in Manhattan and grew up in Brooklyn, told the XOXO podcast with Jessica Szohr she knew a lot of people from the Upper East Side in her 20s, who were “very similar to the Gossip Girl characters and involved in that world”, adding “and some were actually more scandalous than the show portrayed”.
Trachtenberg joined the hit show in its fifth season as Dawn, the younger sister of Buffy, played by Sarah Michelle Gellar.
How I Met Your Mother actress Alyson Hannigan, who played Willow Rosenberg, shared a series of photos of Trachtenberg including old pictures from when they shared scenes.
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