“The place went wild, and after 4 minutes and 27 seconds of what sounded like Justin Bieber, I found out the worst news imaginable.” We wouldn’t quite go that far, but we do see the moment when a buzzing post-show Gryffin’s bubble is well and truly ...

Justin Bieber hasn’t been “acting like himself,” a source exclusively tells Parade.

“How Bustin Jieber duped me during my own set,” Gryffin captioned the clip, referring to the mimicker.