YouTube sensation Keenan Cahill came out from behind his computer screen and hit up a hot, NYC club this weekend!
Cahill, who became an Internet hit after Katy Perry retweeted his YouTube cover of "Teenage Dream," was the special guest at NY club The Lott this weekend -- where he "performed" the Perry hit and Usher's "DJ Got Us Fallin' In Love."
Check out the fun performance!
