The annual Wango Tango all-day concert event by 102.7 KIIS FM went down on Saturday in Carson, California at the StubHub Center. Ariana Grande, who celebrated her new single debuting No. 3 on Billboard, performed “Problem” for the first-time live with special guest Iggy Azalea. That wasn’t the only surprise, as the pint-sized R&B singer opened the show with G.O.O.D. Music’s Big Sean joining her for “Right There.”

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Previously: Ariana Grande Feat. Iggy Azalea – “Problem”