The guys have previously toured together, when Cody Simpson opened for Justin last year on his tour, and Justin had hinted at making an appearance on The Paradise Tour!
After the concert Justin tweeted:
Surprised the crowd at my bro @CodySimpson show tonight. Proud of him. He killed it! Great job Cody
Fans went crazy when they spotted Justin on stage! Were you at the concert? If you weren't check out this video of what went down!