Following her family's decision to decline an autopsy, the cause of Gossip Girl star Michelle Trachtenberg's death remains unknown after she passed away at the age of 39

The cause of death for Michelle Trachtenberg, the “Gossip Girl” and “Buffy the Vampire Slayer” star, will remain undetermined as her family declined an autopsy, Variety has confirmed. Families can decline autopsies when there is so evidence of foul play or for religious reasons.

From Ed Westwick to David Boreanzaz, how the casts of Gossip Girl, Buffy, and more are paying tribute to Michelle Trachtenberg.

Casey Carlyle in Ice Princess (2005) or Georgina Sparks in Gossip Girl (2008-2012), Michelle Trachtenberg likely touched your life in one way or another. And although the actress had a life shorter than she deserved,

Actress Michelle Trachtenberg has died at the age of 39. Trachtenberg starred in multiple hit TV series, such as “Gossip Girl” and “Buffy the Vampire Slayer.” These are some of Trachtenberg’s more iconic roles.

Michelle Trachtenberg has died at the age of 39. The actor, who was best known for her breakout role on Nickelodeon's Harriet the Spy as well as later stints on Buffy the Vampire Slayer and Gossip Girl,