JB can guest star on Glee, if he wants

"Glee's" executive producer Ryan Murphy has issued Justin Bieber an open invitation to stop by McKinley High for a cameo.

"I think he's so phenomenally talented and I think he's great. So, yes, if he was interested I would make that happen," Murphy tells Access Hollywood.

He's not the only Biebs fan on set. "Well, the kids sing his stuff all day long. Yeah, they do. They sing 'Baby.'" If