Glee

We've already shown you the incredible costumes Glee characters will don on the Tuesday episode, "Theatricality." Trust us: they'll make Lady Gaga proud.

Now, we can give fans a sneak peek at the special episode. During the hour, Kurt and the gals will sing about some seriously "Bad Romance."

Below, Chris Colfer gives us a backstage look at what went into these numbers and outfits. Needless to say, we absolutely can't wait for Glee to go Gaga!