Los Angeles, California - Barbie star Margot Robbie wasn't exactly a "Barbie girl" while working on Quentin Tarantino's movie, Once Upon a Time in Hollywood.

Amid gracing the cover of Vogue, the 32-year-old Australian beauty got honest about her past looks over the years on the outlet's web series, Life in Looks.

One moment that particularly stuck out for Robbie was her role as the late Sharon Tate in Tarantino's Oscar-winning film, where the director apparently told the star not to wash her feet prior to shooting a scene.

"My feet were dirty because I'd been walking around set all day," the Wolf of Wall Street actor revealed. "They stayed dirty in the movie because Quentin said, 'Don't. Don't clean them.'"

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Robbie added that Tarantino wanted them to look "real."

The admission isn't too hard to believe, as it has been rumored that the Kill Bill filmmaker has a "fetish" for feet.

Moving away from the foot talk, Robbie also dished on the impact Barbie has had on young girls.

The Suicide Squad star will be portraying the iconic doll in Greta Gerwig's anticipated film.

Robbie believes Barbie inspired girls and "had some sort of impact" on what they believed was possible for their futures, despite any controversy surrounding the "first woman doll" and the sexualization of the iconic blonde.

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"She's a doll. She's a plastic doll. She doesn't have organs. If she doesn't have organs, she doesn't have reproductive organs," she said. "If she doesn't have reproductive organs, would she even feel sexual desire? No, I don't think she could."

The I, Tonya star added, "She is sexualized. But she should never be sexy. People can project sex onto her. Yes, she can wear a short skirt, but because it's fun and pink. Not because she wanted you to see her butt."

Robbie's portrayal as the iconic "first woman doll" is closer than you think! Catch the Barbie movie when it hits theaters July 21.