American actress Lily Collias trained at The Lee Strasberg Theatre & Film Institute, whose alumni include Alec Baldwin and Sally Field, before making her film debut in Palm Trees and Power Lines.

She came to mainstream attention in India Donaldson's coming-of-age drama Good One, for which she received critical acclaim and a nomination for Breakthrough Performer at the 2024 Gotham Awards. In 2025, Collias can be seen in A24's upcoming book to horror film adaptation, Altar, and she'll also star alongside Peter Dinklage and Kirsten Dunst in the crime drama Roofman, set for release in October.