Get ready, Jeff Kinney fans! The author’s best-selling book series, Diary of a Wimpy Kid, is headed to big screens next year. And luckily for you, we’ve snagged exclusive photos from behind-the-scenes of the film, which stars Zachary Gordon as Kinney’s wise-cracking hero, Greg Heffley. Rachael Harris and Steve Zahn play Greg’s quirky parents. “It was so fun working with them,” says Gordon, who dons this tree costume for Greg’s school play. “I actually went out to dinner with our on-screen family. We had such a fun time, and we actually bonded like a real family.”

For more exclusive First-Look photos, including an additional shot of Gordon rocking the tree costume, pick up the new issue of Entertainment Weekly on stands now.

(Three more first-look shots, just ahead…)

Photo Credit: Joan Teasdale for EW