'The Fault in Our Stars' author, cast share candid photos with TODAY

To ring in the announcement that "The Fault in Our Stars" has been named the fourth TODAY Book Club pick and will soon be released as a major motion picture, author John Green and actors Shailene Woodley, Ansel Elgort and Nat Wolff took over TODAY's Instagram account on Wednesday to share some candid shots. 

Read an excerpt from John Green's "The Fault in Our Stars"

Join the "TFiOS" group at 6:30 p.m. ET on Thursday as they answer your questions on the TODAY Facebook page

TODAY Book Club members also will have the unique opportunity to participate in a Google+ Hangout live from the premiere of the film adaptation of the book. RSVP to the Google+ Hangout with Willie Geist, John Green and the cast of "The Fault in Our Stars" on Monday, June 2 at 6 p.m. ET. Be sure to follow @TODAYsBooks and stay up to date with the TODAY Book Club newsletter.