MARGOT ROBBIE: 'I SLAPPED LEO THE FIRST TIME I MET HIM'

Margot Robbie and Leonardo DiCaprio get hot and heavy in 'Wolf'. Credit: Roadshow Films

If there's one more thing to know about "The Wolf of Wall Street" before its release on January 23, it's that you should be ready to remember scene-stealing, Aussie-born Hollywood newcomer Margot Robbie, who plays Jordan Belfort's (Leonardo DiCaprio) manipulative second wife, Naomi (aka "The Duchess").

Robbie -- who generated some Tinseltown buzz (and tabloid headlines) earlier this year while filming "Focus" with Will Smith -- makes a very good impression upon Belfort and his pals when she walks into one of their outlandish parties in the Hamptons.

Robbie at 'The Wolf of Wall Street' premiere this week. Credit: Getty Images

Coincidentally, Robbie made a similarly striking impression upon DiCaprio and director Martin Scorsese during the "Wolf" audition process, due in part to her mastery of the Brooklyn accent, but more so because she was so into their scene she slapped DiCaprio.

Speaking to Yahoo! Movies, Robbie recounted, "We were in a studio audition room in New York, and he still had his giant beard and long hair from 'Django Unchained' because he had just wrapped filming. And I walked into the room and for a heartbeat I thought, 'Who is that? Someone sort of homeless-looking in the corner?' That was Mr. DiCaprio, and then a few minutes later we're doing our scene and I ended up getting carried away and hitting him in the face."

Despite the unusual encounter, it was relatively smooth sailing after that for Robbie and DiCaprio.

"Our first encounter was a little interesting," Robbie laughed, "But that definitely broke the ice and we've had a great working relationship ever since."

WATCH: 'The Wolf of Wall Street' trailer

In other interesting news, while the onscreen sex scenes for 'Wolf' between the pair were raunchy, Robbie admitted they were anything but sexy to film.

"The whole thing ended up being quite comical," Robbie told The New York Post. "We (had to) entice this dog to jump in the bed and bite at Leo’s feet ... so we had dog trainers at the end of the bed [with] dog treats ... we’re putting chicken liver on Leo’s toes. We’re in a small room, it’s hot, it’s sweaty, it smells like dog food."

That doesn't exactly sound like the right kind of hot and sweaty!

WATCH: Sex scene with Leo not so sexy

Kara Warner writes for Yahoo! Movies