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Meet amazing Grace VanderWaal, 12-year-old ‘America’s Got Talent’ winner

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She's the pint-size breakout star we met on "America's Got Talent": singer Grace VanderWaal stunned judges and viewers alike and went on to win the competition. Now she’s officially with Simon Cowell's record label, and next month she'll start her own Las Vegas show, all at just 12 years old! “It hasn’t set in yet,” she says.