The cause and manner of Michelle Trachtenberg's death are undetermined, according to the New York City Office of the Chief Medical Examiner.

The British royal mourned the “Gossip Girl” alum who was found dead inside her New York City apartment Wednesday.

Sarah Michelle Gellar has paid tribute to her former Buffy The Vampire Slayer co-star Michelle Trachtenberg following her ...

Trachtenberg referred to the British princess as "my girl E" and a "wonderful human" in Instagram posts through the years ...

Michelle Trachtenberg's death has been ruled "undetermined". The 'Buffy the Vampire Slayer' star was found dead on Wednesday ...

While there is no criminality suspected, the city Medical Examiner couldn’t tell what caused the star’s death from a ...

Michelle Trachtenberg’s family declined an autopsy of the Gossip Girl alum’s body. She was pronounced dead Feb. 26 after being discovered unresponsive in her New York apartment.

Blair Waldorf? Serena van der Woodsen? Let's be real, the best Upper East Side mean girl was always Georgina Sparks on Gossip ...

Former cast members of “Buffy the Vampire Slayer,” “Gossip Girl” and more are remembering their co-star Michelle Trachtenberg ...

The late Michelle Trachtenberg was dating Jay Cohen at the time of death. Learn more about him below.

Michelle Trachtenberg's cause of death was ruled "undetermined" by the Office of Chief Medical Examiner in New York City, Fox News Digital confirmed.

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