The 14-year-old actress can be seen in Martin Scorsese's film, Hugo, opposite Sir Ben Kingsley, Sasha Baron Cohen and Emily Mortimer, out on November 23 in the US and on December 2 in the UK.
"When I shot Hugo, I told Scorsese how much I love Audrey Hepburn," Moretz shared to New York Magazine.
"I think she's the most amazing actress. I've seen any movie she's ever been in. He was like, 'Since you like Audrey, I'm going to show you a film called The Red Shoes. Watch it, and tell me what you think'.
"And I absolutely loved the movie. And he goes, 'That's actually one of the films that my charity the Film Foundation found and restored it.' Once I heard that, I had to be a part of it. I fundraise. I publicise it.
"My friends haven't seen a lot of old movies, until I showed them. I just try to get my generation into it."
Moretz has said that she's interested in reprising her role of Hit-Girl in a Kick-Ass sequel.
Watch the trailer for Hugo below: