mileycyrus230.jpgMiley Cyrus is on a mission to change her squeaky clean image ... and with her bad girl role in the upcoming So Undercover, the former Hannah Montana star just may do that!

Miss Miley will not only be playing a tough-as-nails sorority girl who's undercover, but she'll be carrying a gun and riding a motorcycle, according to Hollywoodlife.com.

The movie script says that the teen queen, who is playing the part of badass Molly, will be a private eye who takes on government cases to help her dad pay a debt to a bookie.

Billy Ray's little girl will also be showing the world her foul mouth, too .... saying words like "holy s**t" throughout the movie, adds the site.

Is Miley channeling Sandra Bullock in 2000's Miss Congeniality? We can't wait to see the Disney starlet's transformation!