The 15-year-old musician brought Selena, 17, on stage to serenade her.
Selena even sang along and picked up the dance moves to dance with him on stage! Sel & The Scene also performed “More.”
Check out all the performances below!
TELL JJJ: What was your favorite performance?
Justin Bieber & Selena Gomez – “One Less Lonely Girl”
Selena Gomez & The Scene – “More”
Justin Bieber – “One Time”