Michelle Trachtenberg, the actor known for “Gossip Girl,” “Buffy the Vampire Slayer” and “Harriet the Spy” died Wednesday. She was 39. New York City police responding to a call at a residential high-rise building in Manhattan found Trachtenberg unresponsive and emergency medical services pronounced her dead at the scene,

Rosie O’Donnell paid tribute to her former co-star, Michelle Trachtenberg, who was found deadin her New York City apartment on Wednesday. “Heartbreaking,” O’Donnell said in a statement to Us Weekly. “I loved her very much.

Michelle Trachtenberg’s former co-stars are paying tribute in the wake of her sudden death. It was confirmed yesterday that the actress had tragically died at just 39 years old. The New York Police Department responded to a 911 call on Wednesday morning,

Michelle Trachtenberg's mom talked to her the night before she was found unresponsive in her New York City apartment, TMZ reports.

Trachtenberg was found dead in New York City on the morning of Wednesday, Feb. 26 Michelle Trachtenberg was reportedly “struggling” before her sudden death. The Gossip Girl alum was 39 years old when she was found dead in New York City on Wednesday,

The cause of death for actress Michelle Trachtenberg has been ruled “undetermined” by the New York City Medical Examiner, according to an agency spokesperson.

Michelle Trachtenberg’s cause of death has been ruled "undetermined" by the medical examiner. The actress was 39 when she was found dead in an apartment in New York City on Feb. 26.

Michelle Trachtenberg’s former “Buffy the Vampire Slayer” costar Sarah Michelle Gellar is looking back at their time together on screen and off, one day after Trachtenberg died in New York City.

Michelle Trachtenberg’s cause of death ruled ‘undetermined’ after family objects to autopsy - The ‘Gossip Girl’ alum was found dead in her New York City apartment on Wednesday

Gellar is honoring her late 'Buffy the Vampire Slayer' costar, who died on Wednesday, February 26, with a powerful quote from the show.

Sarah Michelle Gellar, Taylor Momsen and Blake Lively are among those paying tribute to Michelle Trachtenberg, who died Wednesday.