In case you haven't yet read the wildly popular YA novel The Duff, the story centers around a high school girl, Bianca, who has an existential life crisis when she finds out she's known as 'The D.U.F.F.' of her friend group.

Little, Brown
D.U.F.F. = Designated Ugly Fat Friend
Lucky for us, the book is now being turned into a hysterical new film starring Mae Whitman, Robbie Amell, and Bella Thorne.

CBS Films

CBS Films
And we've got an exclusive clip as the author and cast talk all about the making of the movie.
Keplinger tells the story about how she got her inspiration for the book while in high school:
CBS Films
CBS Films
CBS Films
CBS Films
CBS Films
And, because the universe works in mysterious ways, the one actress she was dying to have play Bianca — if it got turned into a movie — actually happened!
CBS Films
CBS Films
And Whitman was just as psyched to be a part of the project — which is pretty clear because she totally kills it in the film:
CBS Films