OMG! Darren Criss & Katy Perry Together For Teenage Dream!

What a RAD surprise!

Last night at the special Trevor Live benefit in Hollywood, Glee’s Darren Criss put on a special performance of Teenage Dream with the Dalton Warblers…and Katy Perry!

Yes! Yes! Yes! Their harmonies= perfection!!!

Check out Katy throw down with Darren at the benefit last night in the video above!

This kid has BLOWN UP!