Behind the Scenes: Glee's Rachel, Blaine, and Brittany

Glee: The 3D Concert Movie doesn't open until September 21 here—more than a month after its US premiere—so in the meantime, hang out with Lea Michele, Darren Criss, and Heather Morris backstage during the tour.

In character, Lea warms up and talks Barbra Streisand, while Heather misses her cat Lord Tubbington and claims she's a better singer than Mercedes (Amber Riley). As for Darren, he didn't know he was supposed to act as Blaine in the video. So that's why he ditched the blazer.

P.S. Remember that super adorable mini Warbler? Watch him in Brittany's video!

On the Road with Rachel Berry

On the Road with Brittany Pierce

What's your favorite sneak peek clip? Sound off in the comment section below!