This Is Our Youth, Kenneth Lonergan's 1996 play about uptown rich kids adjusting to adulthood, will begin previews at the Cort Theatre on August 18. Stars Michael Cera, Tavi Gevinson and Kieran Culkin took a break from their tech rehearsal to pose for pics and chat with the press. Catch this hot ticket, directed by Tony winner Anna D. Shapiro; it officially opens on Broadway on September 11.