Pitt and director Joseph Kosinski attended the gathering essentially to introduce themselves and thank the drivers in advance for accepting any inconvenience associated with the production of the new Apple-backed F1 movie.
After months of preparation shooting began in earnest this weekend, and the film’s fictional 11th team has a high profile presence in the paddock and pitlane.
The production's converted F2 cars will be seen on the grid before the race, and will complete part of the formation lap, driven by former racers turned stuntmen Craig Dolby and Luciano Bacheta.
“I think it's one of those when you when you see a worldwide superstar for the first time, it's quite surreal,” said GPDA director George Russell of Pitt’s appearance.
“And then it's only when you get to be with those individuals whether it was Tom Cruise, Brad Pitt or Roger Federer, whoever we've been fortunate enough to meet, you recognise they're just normal human beings.
“He was joking around and having a good time and just kind of one of the boys really. So excited to see what the movie does.”
Source: Autosport