Her first starring role was in the Nickelodeon film Harriet the Spy. She later played roles on Buffy the Vampire Slayer and Weeds.
She was born into a family of both Christian and Jewish heritage: while growing up, she celebrated both Christmas and Hanukkah.
Her film credits include 17 Again and EuroTrip.
The daughter of Lana and Michael Trachtenberg, she grew up with an older sister.
She played a villain on Gossip Girl, a series that starred Blake Lively.