Grace VanderWaal, "America's Got Talent's" 12-year-old breakout star, wowed the judges for a third time with a performance on Tuesday night.

Armed with her ukulele and another original song, "Light the Sky," VanderWaal earned a standing ovation for her performance, with even tough-as-nails judge Simon Cowell rising to his feet.

With lyrics like "I can't stop dancing like no one's around/And yeah, I think we were born to shine," and her already signature rasp, "Talent" judges are predicting VanderWaal's victory.

She debuted another original tune, "Beautiful Thing" -- which she wrote for her older sister Olivia -- on the August 23 quarterfinals.

VanderWaal was the breakout performer of the show's auditions in June when she performed another original tune, "I Don't Know My Name."

Following her first performance, judge Howie Mandel called VanderWaal "a living, beautiful, walking miracle."

"The world is gonna know your name," Mandel said in June as he pushed the buzzer to send VanderWaal through to the live shows.

VanderWaal tweeted after that live performance, "What an amazing experience. I have never felt so amazing in my life. Thank you"