‘Glee’ Gang Joins Keenan Cahill in Katy Perry Lip Sync (VIDEO)

'Last Friday Night' Cameos
See what celebs show up in Katy Perry's new video.
Keenan Cahill has struck again, and this time he has some famous friends backing him up!

The Internet sensation recently caught up with some of the Glee cast to do their own fun rendition of Katy Perry’s “Last Friday Night.”

We’re sure that Darren Criss was more than prepared for this fun video.

Considering he made a cameo in the video itself! Check it out below.

Keenan tweeted the video out, saying:

“me and glee doing last friday night :)”

Also, don’t forget to watch Keenan and the Glee kids singing it above!

What do you think of the vid? Let us know in the comments!