The Red Woman character - described in the script simply as "a ghostly red shape" - was brought to life without CGI through a collaboration with Brooklyn-based artist Daniel Wurtzel, known for installations combining lightweight fabrics and air into kinetic, mesmerizing forms.
Lowery staged Mother Mary's concert performance at London's Hyde Park, with Hathaway performing in front of approximately 400 extras.
Di Mottola custom-built the location's flooring and entire upper-level loft where Sam designs clothing, keeping everything monochromatic to allow color and light to be injected later.
David Lowery wrote the part of Hilda with Hunter Schafer in mind. She had already worked with Lowery's wife Augustine Frizzell when she directed Euphoria (2019)'s pilot, and was "taken with her talent and energy".
Michaela Coel called Lowery to enthusiastically praise his screenplay before being cast - it was during that conversation that Lowery immediately envisioned her as Sam Anselm, struck by the way she spoke with the same direct, passionate, and voluble language as the character.
