AceShowbiz - Margot Robbie snuck a kiss with Brad Pitt in "Babylon". Starring opposite the Oscar-winning actor and producer in the upcoming film, the actress has admitted to improvising a scene only to kiss the 58-year-old heartthrob.

In an interview with E! News, Robbie revealed that she had to convince director Damien Chazelle to allow her to film the kissing scene that "wasn't in the script." When host Francesca Amiker mentioned what she dubbed as "what will become an iconic kiss scene," the Aussie beauty shared, "That wasn't in the script."

The 32-year-old remembered thinking, " 'When else am I gonna get the chance to kiss Brad Pitt? I'm just gonna go for it,' " so she proposed the idea to Chazelle. "I said, 'Damien, I think Nellie would just go up and kiss Jack,' " she recalled.

"And Damien was like, 'Well, she could-wait, hold on. You just wanna kiss Brad Pitt.' And I was like, 'Oh, so sue me. This opportunity might never come up again.' And he was like, 'It does work for the character,' and I was like, 'I think so,' " Robbie explained, adding that the kiss scene "was just great."

In another interview with ET Online, Robbie talked about finally sharing the screen with Pitt after starring in two other films before, 2015's "The Big Short" and Quentin Tarantino's "Once Upon a Time in Hollywood" (2019). "It's technically the third film we've appeared in together, and we've never acted together until this film," she divulged. "So that was a wonderful gift.... He's so, so wonderful. Watching Brad Pitt, the biggest movie star, play the biggest movie star it's just something like, inherently fun."

In "Babylon", Robbie plays Nellie, an ambitious aspiring actress who looks to make her dreams come true in 1920s Hollywood with help from fellow aspiring star Manny Torres (Diego Calva) and veteran actor Jack Conrad (Pitt). She said of her character, "Nellie is extremely reactionary, like, if you come at her with a bit of heat, she'll come back with fire."

"That's a fun and exhausting character to play," she continued. "The trick was being able to keep up the energy levels all the way through, because like, after a couple months of being on that level and knowing that you still have huge sequences to go, that's when you really gotta have a hard word with yourself and be like, 'Don't slack, don't even give an inch less than what you gave day one of this shoot.' "

"Babylon" is set to hit theaters across the nation on December 23.