Margot Robbie said she tapped into the ‘pure’ nature of her mother Sarie Kessler to help get into character for the box office hit Barbie.

The Australian actor, 33, who produced the critically acclaimed film which amassed $1.4billion, said she initially had trouble finding the character of the 1959 Mattel doll.

However, she managed to channel her own mother’s sense of the world to develop an iconic leading woman, she told Variety’s Actors on Actors on Wednesday.

One day on set my mum was visiting and Greta [Gerwig, the director] turned to me and said, “Oh my god, you’re playing your mum aren’t you?”‘ Margot said.

She went on to tell fellow interviewee/interviewer Cillian Murphy: ‘Weirdly I was kind of playing my mum a little bit because my mum is so pure.’

Margot Robbie, 33, (right) said she tapped into the ‘pure’ nature of her mother Sarie Kessler (left) to help get into character for the box office hit Barbie

Just moments before, Margot admitted she was just as stunned as everyone else when Barbie made it big at the global box office.

Amassing an incredible $1.4billion, Greta Gerwig’s comedy about the 1959 Mattel Barbie doll held its own against Christopher Nolan’s biopic Oppenheimer.

Margot, who is the producer and titular star of the popular flick, told Variety she was shocked at the online cultural impact the movies had on their opening weekend.

The Australian actor who produced the critically acclaimed film which amassed $1.4billion, said she initially had trouble finding the character of the 1959 Mattel doll

‘The fact that people were going and being like, “Oh, watch Oppenheimer first, then Barbie.” I was like, “See? People like everything.” People are weird,’ she said.

Turns out the hilarious memes about Barbie battling the ‘father of the atomic bomb’ J. Robert Oppenheimer were all thanks to Margot.

Interviewing with Oppenheimer star Cillian, 47, Margot revealed she was the mastermind behind the double billing known as Barbenheimer.

However, she managed to channel her own mother’s sense of the world to develop an iconic leading woman, she told Variety’s Actors on Actors on Wednesday. Pictured with co-star Ryan Gosling who played Ken

The award-winning actor recalled the moment Oppenheimer producer Chuck Rove called her and said, ‘I think you guys should move your date’ after the two movies were slated to release on July 21.

‘And I was like, “We’re not moving our date. If you’re scared to be up against us, then you move your date”,’ Margot explained.

‘And he’s like, “We’re not moving our date. I just think it’d be better for you to move.” And I was like, “We’re not moving!” I think this is a really great pairing, actually. It’s a perfect double billing, Oppenheimer and Barbie.’

Irish actor Cillian commended Margot for sticking to her guns, saying: ‘That was a good instinct.’