Leonardo DiCaprio, meanwhile, looked a little more in the zone, as he exited the room with a drink in hand. The photos surfaced just as ET has learned that Al Pacino has also joined the movie's cast, playing Marvin Shwarz, the agent of Rick Dalton, played by DiCaprio. The project marks the first time Pitt and DiCaprio have appeared together in a feature film. 

Once Upon a Time in Hollywood is set in 1969, at the height of hippy Hollywood. Dalton, the former star of a Western TV series, and his longtime stunt double, Cliff Booth (Pitt), are struggling to make it in the movie business -- but live next to a very famous next-door neighbor, Sharon Tate(Margot Robbie). 

Tate, a celebrated actress and wife of director Roman Polanski, was eight-and-a-half months pregnant when she was killed during the infamous Manson Family murders in 1969, when disciples of cult leader Charles Manson went on a killing spree. 

Burt Reynolds, Timothy Olyphant, Kurt Russell, Michael Madsen, Tim Roth, Luke Perry, Emile Hirsch, Dakota Fanning, Clifton Collins, Keith Jefferson, Nicholas Hammond, and Damian Lewis also in the film, which is set to hit theaters Aug. 9, 2019.