VIDEO : Ariana Grande Brings Out Justin Bieber To Close Coachella

(CNN) Ariana Grande had an Easter treat for Beliebers this weekend. The singer performed a surprise duet with Justin Bieber to close out her Coachella Valley Music And Arts Festival headlining gig. Bieber, who returned to the stage after an almost two year absence, performed his hit "Sorry" with Grande and said he was surprised, too. "I had no idea I was going to be on a stage tonight," Bieber said. "Absolutely no idea. I wore this fly outfit not knowing I was going to be on stage."