"Infinity Trinity ... #infinitywar ?and street cred @jimmy_rich represent @marvelstudios and @therealstanlee," the 52-year-old actor wrote alongside a pic with Paltrow and Favreau in costume on the set of the Marvel film at Piedmonth Park in Atlanta, Georgia.
Paltrow starred as Stark Industries CEO and Tony Stark's girlfriend, Pepper Potts, in the first three Iron Man movies and Avengers. She was absent in Avengers: Age of Ultron and Caption America: Civil War, but popped up for a special cameo in this summer's Spider-Man: Homecoming. Meanwhile, Favreau has played Stark's bodyguard and friend Happy Hogan since the start of the MCU. Aside from directing Iron Man and Iron Man 2, the actor appeared in the three standalone films and also had a role in Homecoming.