Jake accompanied his sister where the pair coordinated in black and white outfits. Maggie was also accompanied by her husband and actor Peter Sarsgaard, who features in the film.
Gyllenhaal will next star in Antoine Fuqua's Netflix film "The Guilty", scheduled to have its world premiere at the 2021 Toronto International Film Festival in September.
The story follows a couple who become stranded on an island in the South Atlantic and must fight for survival when their dream journey becomes a nightmare.
Amy Adams will back the film via her Bond Group Entertainment and Gyllenhaal through his Nine Stories.
The film will follow the story of Chapman, an Air Force Combat Control Technician (CCT) who died in battle during the War in Afghanistan.