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.

The cause of death for actress Michelle Trachtenberg has been ruled "undetermined" by the New York City Medical Examiner, according to an agency spokesperson. Video above: Remembering those we lost in ...

Michelle Trachtenberg, known for roles in 'Harriet the Spy,' 'Buffy the Vampire Slayer,' and 'Gossip Girl', had undergone a ...