Justin Bieber opens way up in the September 2015 issue of Cosmopolitan.
Featured as the magazine's quiz subject, Bieber comes clean on his full name... the singer with whom he'd love to collaborate with... and plenty more.
Come on, admit it. You didn't know every last one of these Justin Bieber facts, did you?
His go-to-karaoke song is...
Let It Be by The Beatles.
His first-ever show was in...
The singer he would most like to work with it...
John Mayer. Who knew, huh?!?
His favorite summer song is...
Teenage Dream by Katy Perry.
His full name is...
Justin Drew Bieber.
His favorite thins from Canada are...
Ketchup chips, Tim Hortons doughnuts and poutine.