Margot Robbie admits behind-the-scenes 'genital room' existed on Wolf Of Wall Street

It's been 10 years since Margot Robbie made a name for herself with an unforgettable performance in The Wolf of Wall Street.

As well as making her a huge star, the movie also taught her about all sorts of weird and wonderful aspects of filmmaking - such as 'merkin rooms'.

Watch her explain exactly what one of those is here:

The actor - who is now one of the biggest names in Hollywood - was a guest on Aussie radio show Fitzy & Wippa, where the hosts asked her about how she coped with all the nudity in her latest movie, Babylon.

"Honestly, you get desensitised so fast," the 32-year-old said.

Curious about how they accurately portrayed the nudity in the comedy-drama, set in 1920s Hollywood, Wippa replied: "When you've got a period piece, I've heard that a lot of the time it's quite hard to find women with real breasts and pubic hair."

I'm not sure why exactly locating 'real breasts' would be an issue, but it was at this point that Robbie lifted the lid on merkins, which she said you could find in abundance on The Wolf of Wall Street.

Richard Milnes / Alamy Stock Photo

"They have things called merkins, which is like a wig but for genitalia," Robbie explained.

"I remember on Wolf of Wall Street there was an entire merkin room, there was a whole room full of merkins.

"I guess people would go in and pick one out... It was fascinating, and a little known fact about the filmmaking industry."

Robbie was one of many women to go nude in the Wolf of Wall Street, despite director Martin Scorsese giving her the option to water it down a little.

The much-loved movie is based on the story of controversial stockbroker Jordan Belfort, played by Leonardo DiCaprio, with Robbie playing Naomi Lapaglia, Belfort's second wife in the film.

The role featured numerous sexual scenes, including a full-frontal nude scene, and Robbie admitted she was apprehensive about the scenes being immortalised on the internet.

However, when director Scorsese suggested diluting things for her comfort, she made the brave decision to turn him down, in favour of preserving the integrity of the film.

Entertainment Pictures / Alamy Stock Photo

Speaking to The Telegraph in 2014, aged just 23, she said: "I think nudity for the sake of nudity is shameful. If they've put it in just so that a girl gets her top off, then that's disgusting. And you can always tell.

"But I also think it's disgusting when someone would have got naked in real life, in the film they conveniently leave their bra on, or hold up the bed sheet. Seeing someone being choreographed into being covered up irritates me just as much."

She continued: "The whole point of Naomi is that her body is her only form of currency in this world. So when Marty [Scorsese] was trying to help me out, and said in the scene where she seduces Jordan perhaps I could have a robe on, I said she wouldn't. She has to be naked. She's laying her cards on the table."