michelle trachtenberg, known for her roles in 'harriet the spy' and 'gossip girl,' has died at 39. The cause of death has not been disclosed. An investigation is ongoing.

michelle trachtenberg, star of 'harriet the spy,' has died at age 39.

michelle trachtenberg starred in the film 'harriet the spy.'

Trachtenberg appeared in the series 'gossip girl' as Georgina Sparks.

Trachtenberg played Dawn Summers in 'buffy the vampire slayer.'

Trachtenberg accused 'Buffy' creator joss whedon of abusive behavior on set.