Justin Bieber & Austin Mahone: Z100 Appearance!

Justin Bieber and Austin Mahone smile for the cameras after their appearance on Elvis Duran‘s Z100 Morning Show on Thursday (June 21) in New York City.

The 18-year-old entertainer and Austin, 16, stopped and chatted with fans as they left the radio station.

Friday night, Justin met up with some fans online! He posted to his Twitter: “tweet your tinychat link and i might show up in your chat!!” Later in the evening, he posted, “u guys lost it when i went in that tinychat. haha. #goodtimes #wherenext”

Also pictured inside: Justin leaving Late Night with David Letterman after taping an apperance on Wednesday.

10+ pictures inside of Justin Bieber and Austin Mahone making a radio appearance…