Justin Bieber and Selena Gomez Reunite at Miami Recording Studio—See the Pics!

The Biebs works with 15-year-old singer Madison Beer when his ex pops by for a visit

Justin Bieber and Selena Gomez are back, y'all—in the studio, that is.

On Tuesday, the Biebs was in Miami working with15-year-old singer Madison Beer when Ms. Gomez popped in for a visit. Madison's mom Tracie Beer Instagrammed pictures showing Jelena in the same place at the same time.

First Mama Beer shared several pics from the studio recording sesh with her daughter and Justin, 20, then posted a cutesy shot of Madison and Selena, 21, with the caption, "And now this beauty comes to visit."

Madison herself shared a buddy shot showing her resting her head on the Biebs' shoulder as he casually throws an arm around her. Justin also tweeted a link to Madison's selfie and asked the teen, "u ready?" before they hit the studio.

So just who is Madison Beer? Justin tweeted a link to her YouTube channel back in 2012, instantly highlighting her music for the world to hear. This led to a record deal with Island Def Jam. Oh, and it just so happens Madison is managed by the Biebs' go-to guy, Scooter Braun.

Justin even introduces Madison in her debut music video "Melodies," playing himself while chatting with pal Ryan Butler. "Hear that?" he asks, listening to Madison's hit. "She's gonna be a star—trust me."

We Belieb it.