Justin Bieber's Purpose tour continues to be a star-studded affair. Just one night after reuniting with his "Baby" collaborator Ludacris, Bieber brought back an even bigger blast from his past: Usher. That's right, Biebs and the man who helped shape his career were reunited tonight on stage. The pair performed songs like "You Got It Bad" and "I Don't Mind" together, clearly reveling in the long-term friendship they've cultivated over the years.
Keeping the #tbt trend going, Biebs also brought Akon to the stage, who performed his hit song "I Wanna Love You." Perhaps an inappropriate choice for a concert full of teenage girls, but it's not like he has a lot to lose at this point in his career.
You can check out some clips of the concert below.