Martin Scorsese's latest 'The Wolf of Wall Street' is filing out its cast nicely, and it looks like 'Pan Am' star Margot Robbie is the latest to join Leonardo DiCaprio and Jonah Hill in the film.

She would be playing DiCaprio's character's wife, which means she's probably not the only person the hard-partying character sleeps with in the film. This comes from Deadline Hollywood, who note the actress is "in talks," much like recent Oscar winner Jean Dujardin.

Robbie's best known to Australian audiences, as the Aussie native spent four years on the show 'Neighbours' where she won two Logie awards - the Australian equivalent of the Emmy's. Her next film is 'About Time' from Richard Curtis, though it's unknown how large her part is in that.

Working with Martin Scorsese would be a big break for the actress, as 'Pan Am' didn't last too long on the air, which means that most American audiences will get their first good look at Robbie through this movie. That's one heck of a testing ground, especially since she will have to have at least one dramatic confrontation with DiCaprio's character. We imagine yelling will be involved, possibly with bills or receipts in her hands.