Leo DiCaprio teases first pic of him and Brad Pitt looking like retro honeys in their new film

The upcoming flick also stars Margot Robbie...

Leonardo DiCaprio has posted the first glimpse of himself and Brad Pitt in what could be the hottest casting of all time for their upcoming film, Once Upon a Time in Hollywood.

Thanks to Leo's Instagram we've got our first look at Quentin Tarantino's highly anticipated Hollywood tale set in 1960's California shortly after the chilling Charles Manson murders rocked Tinsel Town, especially the gruesome slaying of pregnant starlet, Sharon Tate.

On Wednesday the Oscar-winner shared a pic of himself and 54-year-old Brad smoldering straight at the camera while wearing some retro threads looking like absolute dreamboats.

According to The Hollywood Reporter, Tarantino has previously described the film as "a story that takes place in Los Angeles in 1969, at the height of hippy Hollywood. The two lead characters are Rick Dalton (DiCaprio), former star of a western TV series, and his longtime stunt double Cliff Booth (Pitt). Both are struggling to make it in a Hollywood they don't recognize [sic] anymore. But Rick has a very famous next-door neighbor…Sharon Tate."

But Leo and Brad—who are giving us serious Paul Newman/Robert Redford vibes, right?!—won't be the only major stars to appear in the film with Margot Robbie signing on to play Sharon Tate.

"Tarantino is one of my bucket-list directors," the actress told IndieWire earlier this year. "As long as I can remember, I've been a huge Tarantino fan." As for the task of playing Tate, someone whose life, and more notably death, has become part of Hollywood history, Robbie said she feels "a responsibility with every character I play, whether they're fictional or real life to play her right, play her truthfully, and kind of understand her emotional journey."

And get ready for cameo after cameo with Dakota Fanning, Luke Perry, Damian Lewis, Emile Hirsch, Clifton Collins, Keith Jefferson, Nicholas Hammond, Burt Reynolds, Timothy Olyphant, Kurt Russell, Michael Masden and Tim Roth also set to appear in the project.

So far, word is the movie is set to be released worldwide in August, 2019.