Justin Bieber and Selena Gomez spotted together in Miami studio

Justin Bieber was recently seen with Selena Gomez at the Hot Factory recording studio in Miami, where he was reportedly working with a 15-year-old YouTube star.

Bieber was with protege Madison Beer - a 15-year-old YouTube discovery he is taking under his wing, the Mirror reported.

He got a nice surprise during the session when on/off girlfriend Selena was also spotted at the studios.

Could the two stars be making another go of their roller coaster romance, or is there a musical collaboration in the pipeline, nothing has been reported.