It's here! It's here! It's finally here!

After far too many McKinley-free months, Glee returns tonight with "Frenemies," an adrenaline-pumping new episode that will feature the best bitch-slap in the series' history. To get all you Gleeks onto the pee-your-pants level of excitement that we're on, we've got exclusive scoop from two of Glee's biggest and brightest stars: Lea Michele and Chris Colfer.

E! News was on the music-filled set Monday afternoon to help celebrate the landmark 100th episode with all of the Fox hit's cast and creators at the amazingly nostalgic bash. After toasting to Glee's success (and enjoying a slushie cupcake!) we caught up with the HummelBerry besties to get all the goods on Kurt and Blaine's (Darren Criss) romantic future, having Dianna Agron back on set and who's packing up for the all-NYC move.

VIDEO: Watch the full interview with Lea and Chris below!