Demi Lovato rocked the stage at Wango Tango 2013!

The newly blond starlet opened her set at the May 11 superstar showcase with her lead single, 'Heart Attack,' complete with a lengthy, dramatic rollicking intro. Lovato gave her summery dress wardrobe a break, sporting a sheer black top over a black cami, skintight black pants and boots instead of the A-line numbers she's rocked lately.

The 'X Factor' judge also performed 'Give Your Heart a Break,' as well as her second single from 'Demi,' 'Made in the U.S.A.' And the girl slayed it!

Watch Demi Lovato Perform 'Give Your Heart a Break' at Wango Tango 2013

Watch Demi Lovato Perform 'Made in the U.S.A.' at Wango Tango 2013