Elle Fanning couldn't stop giggling during her sit-down with Jay Leno this week, as she makes the promotional rounds for Super 8. J.J. Abrams's film has been shrouded in secrecy since its onset — apparently Fanning herself didn't even know what it was about until after she had agreed to participate in the project! Watch as she tells Leno how she struggled to keep the movie a secret from her sister Dakota, then discusses all the '70s lingo she had to learn for the sci-fi film.
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