In "20th Century Women" Annette Bening plays a fifty-something mom raising her adolescent son in Santa Barbara, California.
For help, she enlists two younger women:
Julie is her smart and provocative neighbor - she's played by Elle Fanning and then there's Abbie, a free spirited punk artist played by Greta Gerwig.

_DSC0192.NEF
(
Merrick Morton, courtesy of A24.
)
Take Two's Alex Cohen spoke to Gerwig about her character in the film and how she...a child of the 80's...got in the mindset to play a 1970's punk.