Robbie's sneak peek comes days after Sharon's little sister Debra Tate finally gave the film her seal of approval after months of blasting Tarantino and Sony for "exploiting" her sister's death. Robbie let the photo of her scarily accurate take on Tate do the talking, keeping the caption simple: "First look". His sidekick Cliff Booth (Pitt) - who's also his stunt double - is looking for the same thing.
In addition to Robbie, DiCaprio and Pitt, the film also stars Timothy Olyphant, Luke Perry, Damian Lewis, Dakota Fanning, Al Pacino, Emile Hirsch, Clifton Collins Jr, Tim Roth, Michael Madsen, Keith Jefferson, Nicholas Hammond and Scoot McNairy. DiCaprio's character lives next to Tate, who was killed along with four others by members of the Manson Family on the night of August 8, 1969.
The film is Tarantino's ninth and will reportedly be similar in tone to his previous effort Pulp Fiction. "I'm very excited to tell this story of an L.A. and a Hollywood that don't exist anymore".More news: Prince Harry, Duchess Meghan attend his childhood friend's wedding
Once Upon a Time in Hollywood will be released on July 26, 2019.
Robbie's character plays a central role in Tarantino's movie, which takes place in Los Angeles in 1969, at the height of hippy Hollywood. But considering that Rick's neighbor is Sharon Tate, the wife of famous (and infamous) film director Roman Polanski, their struggles may be short-lived - before they get a whole lot worse in a much bigger way.
However, Sharon Tate's sister Debra has said she is "very happy" that the release date is being shifted away from the anniversary of her sibling's murder, according to the New York Daily News.
The film was originally set to be released on the 50th anniversary of the Manson Murders - 9 August - but it has now been pushed back.