Starred in the critically-acclaimed 2010 film 'Greenberg.'
She studied English and philosophy at Barnard College.
She was the voice of Pony Marks on the Cartoon Network's Adult Swim show 'China, IL' and appeared in the romantic comedies 'Arthur' and 'No Strings Attached.'
Greta's parents are Christine and Gordon, a financial consultant and computer programmer.
Her first television appearance was on the "Jimmy Kimmel Live!" show in 2010.