Wango Tango 2013 took place in California on Saturday, May 11, with pop faves like Bruno Mars, Demi Lovato, Miguel and more taking the stage to entertain crowds and fans, and KIIS radio listeners.

Mars looked relaxed and ready for the warm weather in his colorful shirt. He didn't skimp on the bling, either.

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Demi Lovato was putting her defenses up ... she looks fierce enough to give us a 'Heart Attack,' even if we are not loving her shaggy blonde soccer mom 'do.

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Miguel was owning it.

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will.i.am wants you to... check out his new album '#willpower.'

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Ariana Grande was pretty in a ruffled pink skirt ensemble as she did her thing and had her 'Way' with the crowd.

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Pop punk princess Avril Lavigne was channeling Janis Joplin with her long hair and aviator shades.

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Rapper Flo Rida wore an interesting red animal print sweatshirt while spitting his rhymes.

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British star Emeli Sande worked the crowd, hoping to replicate her U.K. success here in the U.S.

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We've been associating Adam Levine with 'The Voice' for so long, so here he is as a crooner.

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