Hadwin openly wept with joy as the golden confetti rained down from the rafters, and was embraced in a big hug by her proud father, who had been watching his daughter perform from the wings of the stage.
Courtney is 13 and goes to school in Peterlee, Country Durham.
From the first moment Hadwin began to sing, judge Simon Cowell was absolutely floored, and he had nothing but praise for the awesome songstress after her performance.
She soulfully sang "Hard to Handle" by Otis Redding.
Courtney Hadwin, 13, from Hesleden in Country Durham took to the stage in the United States overnight and impressed judge Howie Mandel so much he hit the golden buzzer of glory. Then you sing and you're like a lion.
13-year-old singer Courtney Hadwin hit the stage for a performance on Tuesday night (June 12) - and her singing skills were so good that Howie Mandel hit the golden buzzer after her audition!More news: Taco Bell giving out free Doritos Locos Tacos on Wednesday
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It's not her first foray into talent shows, after being pipped at the post on The Voice Kids UK.
"You are not from this era", Mandel said at the end of her performance.
America's Got Talent airs on Tuesday nights on NBC AT 8/7c.
What can you say about Courtney Hadwin's performance?
Since then, the young talent has continued to make a name for herself in the region, appearing on stage at the of Waterfront Festival held at Jackson's Wharf past year.
She even made no-nonsense judge Simon Cowell, who is her favorite, smile from ear-to-ear.