08/27/2013 03:48 pm ET

John Green Posts Adorable Photo Of Shailene Woodley On Set Of 'The Fault In Our Stars'

According to author John Green, the upcoming film adaptation of his novel "The Fault in Our Stars" began shooting on Monday. "It’s amazing how beautiful it all looks," Green wrote on his Tumblr page. "Without getting into spoilers, the visual look of the movie -- from the actors to the sets to the light -- is very similar to a lot of what I imagined while writing, which creates a weird feeling that your imagination has actually become visible. This is a very strange experience; maybe analogous to hallucination?"

Green's book was adapted by "Spectacular Now" writers Scott Neustadter and Michael H. Weber and stars Shailene Woodley, Ansel Elgort, Nat Wolff and Laura Dern. Thus far, Green is impressed.

"Just had a good cry with Shai and the wonderful Laura Dern," the author wrote on his Facebook page earlier on Tuesday. "One of these days I'll make it to noon before weeping, but not today."

Check out a set photo of Green and Woodley (with her hair cut short) above. "The Fault in Our Stars" will likely hit theaters next year

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