As the stars of the dark and quirky Sundance hit “Ingrid Goes West,” Aubrey Plaza and Elizabeth Olsen — who frequently inhabit opposite ends of the character spectrum — play out a comedic, cutting-edge take on the modern social phenomenon of Insta-envy and Insta-aspiration. Adrift in her life, loner Ingrid (Plaza) takes her obsession with the picture-perfect images from the feed of social media-savvy Taylor (Olsen) to a disturbing, sometimes funny, extreme.

[…]

WWD: How soon after signing on to this did you guys start following each other on Instagram?
Elizabeth Olsen: I didn’t have an Instagram, and you didn’t either. Well, apparently, you did.
Aubrey Plaza: I did. I had a private one. No, I didn’t have a public one.
E.O.: She never invited me or told me about it!
A.P.: Come on. Don’t do this. I never post on it.
E.O.: You post a lot of stories on it.