Adding some feminine flair to her boyfriend’s gig, Selena Gomez made a surprise appearance at Justin Bieber's concert last night (October 6).

The “Wizards of Waverly Place” hottie took the stage in Rio de Janeiro to sing her mega hit song “Who Says.”

And of course, the Biebs strolled out towards the end of the tune to join his girlfriend in singing the chorus as the fans went wild.

At the end, Justin gave Selena a hug and a kiss. After the show, he tweeted, “RIO!!! CRAZY!! thanks to @selenagomez for helping me do something special for the crowd. a duet never hurt nobody.”




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