The independent drama will feature an ensemble cast in a story about a group of New Yorkers whose lives are affected in different ways by a philosophy professor.
Stewart will be appearing in what has been described as a small role, according to Deadline.
The movie, written and directed by Nelson, is currently filming in New York.
Stewart has taken on several roles in independent films since branching out from her Twilight character Bella.
She will next be seen in the military drama Camp X-Ray.
Watch a trailer for The Twilight Saga: Breaking Dawn - Part 2 below: