Justin Bieber: 'All Around the World' Premiere Date!

Justin Bieber flashes a peace sign as he chats with fans before doing a sound check for his appearance on The Late Show with David Letterman on Wednesday (June 20) in New York City.

Earlier in the week, the 18-year-old heartthrob went back to his roots as a busker, playing his guitar and singing “Baby” on the steps of the Avon theater in Ontario, Canada, during the intermission of You’re a Good Man, Charlie Brown.

Part 1 of Justin‘s All Around the World special premiered Wednesday night. “Not gonna lie. watching this special for the 1st time with u guys. amazing seeing it all again,” he tweeted. Catch the Part 2 on Thursday at 8 PM on NBC!

Also pictured inside: Justin signing autographs at a meet-and-greet on Tuesday.

10+ pictures inside of Justin Bieber taking pictures with fans…