"Once Upon a Time in Hollywood" is in theaters on July 26.
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At the premiere of "Once Upon a Time in Hollywood," the actress explained why "Barbie" is a character worth bringing to life. The live-action film is due out in 2020 and set to be written by Greta Gerwig and Noah Baumbach, while Robbie serves as a producer.
"I think it's a great opportunity to put some positivity out in the world and a change to be aspirational for younger kids," Robbie told Variety's Marc Malkin.
"After I read the script, I definitely felt confident because it was very evident the take that Quentin had in portraying her — and it was evident to me by the way he wrote her that he adored her and he was charmed by her and he had memories of watching her when he was 7-years-old and just being utterly delighted — and that kind of seeped into his writing," Robbie explained. "I could feel that when I read it and it was just, it was a great opportunity."
"I think obviously the film is based on two fictional characters [DiCaprio's Rick Dalton and Pitt's Cliff Booth], but Sharon's presence throughout is a nice way, I think, to give her a chance for people to really appreciate the life she lived as opposed to remembering her for her death." she said.
Over the last 10 years, Margot Robbie has stepped into the skates of Tonya Harding, taken up the mantle of Harley Quinn and next up, she's playing the world's most famous doll, Barbie.
While Barbie may be an aspirational icon, in "Once Upon a Time in Hollywood," the actress is taking on a different kind of challenge – playing the late Sharon Tate in the Tarantino film. But was there any hesitation about playing the late actress? The actress looked every part the movie star, exuding old Hollywood glamour as she posed alongside Leonardo DiCaprio, Brad Pitt and director Quentin Tarantino on the red carpet Monday night at the TCL Chinese Theater.

After being courted for several months, Leonardo DiCaprio will star in Quentin Tarantino's untitled Charles Manson movie, sources confirmed to Variety.
Deadline Hollywood first reported the news.” />
This will mark DiCaprio's first film since winning the Oscar in 2016 for his performance in Alejandro G. Iñárritu's "The Revenant." DiCaprio and Tarantino last collaborated on 2012's "Django Unchained."
He is repped by LBI Entertainment.
DiCaprio will play an aging, out-of-work actor in the film. Margot Robbie, meanwhile, is being eyed for the role of Sharon Tate.
As previously reported, Tom Cruise is also being pursued to star in the director's ninth feature. Sources now tell Variety that Tarantino is interested in casting Al Pacino in the film as well. Sony is handling distribution.
Sony beat out several bidders, including Warner Bros. and Paramount, for rights to the film. The movie — shrouded in secrecy — is set in 1969 and is believed to involve Charles Manson and the Manson family murders. A group of investors led by Maria Contreras-Sweet is in a strong position to buy the Weinstein Company following sexual misconduct allegations against its disgraced founder Harvey Weinstein. It's the first pic that Tarantino is releasing without the Weinstein Company. The director has told media outlets that it's not a biopic, but is an ensemble film set during the tumultuous time period.
9, 2019, Variety has learned. Opening on the 50th anniversary of the day that the Manson family committed the LaBianca murders and the day after Tate was killed, the film will head off against "Artemis Fowl," Disney's adaptation of the popular sci-fi and fantasy series. The movie will hit theaters on Aug.