Margot Robbie has revealed how she grabbed an unscripted snog with Brad Pitt in their new film Babylon.
The actress ad-libbed the kiss but insists it was the tamest part of the film.
Set in 1920s Hollywood, Babylon showcases the decadence and debauchery of the era with orgies and sex scenes aplenty.
Margot, 32 – who is also making her name as a producer – said of the clinch: “That wasn’t in the script, but I thought ‘When else am I gonna get the chance to kiss Brad Pitt?
“I’m just gonna go for it.’ A movie kiss is different to any other kiss.
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“I would not want to make the other 20 people I kissed in this movie jealous by rating the Brad kiss.
“It is the least interesting thing that happened in Babylon.”
Co-star Pitt, 58, said he was happy with Margot getting creative.
He said: “You know, you get up there and let the spirits take over and see what comes out. We were having some fun.
“There’s always room for character interpretation. Believe me, that is the tamest thing she does in this movie. She’s on fire on this. It’s the best I’ve ever seen her.”
Margot says she got into the mindset of her character by partying for days on end – and said starring opposite Pitt was “brilliant”.
The pair previously appeared together in Once Upon a Time in Hollywood and The Big Short – but not in the same scenes.
Aussie Margot said at the LA premiere of Babylon: “It’s the third film we’ve appeared in and we’ve never acted together until this film. 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.”
Babylon is released in the UK on January 20.