Justin Bieber Singing "Baby" at Nickelodeon's Mega Music Fest

Here's a sneak peek of Justin Bieber singing an acoustic version of "Baby" at Nickelodeon's Mega Music Festival:

The Nickelodeon Mega Music Fest will premiere on Labor Day, Monday, September 6, at 8 p.m. ET/PT on Nickelodeon.

Are you going to tune in?

J-14