The trailer for Glee: The 3D Concert Movie is out, and it looks Gleektastic!

The flick opens August 12 in a special two-week-only run (though we're betting that if it does well, they'll extend the stint.)

In the trailer, watch Jane Lynch rock a track-suit skirt and advise audiences to not see the movie. “Please, save your money," she says. "This thing sucks.”

Hilarious!

The 3D movie documents the "Glee Live! In Concert!" North American tour.

Could be the last chance to see Chris Colfer, Corey Monteith and Lea Michele on tour; creator Ryan Murphy just announced they will leave the show after next season ... and he's getting some serious backlash for the news. See why after the jump!