Treehouse Masters - Season 9 Episode 08
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9x08 | Grace VanderWaal's Got Treehouse
September 16,2017, 04:00AMWhen asked in 2016 what she would do with her winnings, ``America's Got Talent'' Season 11 winner Grace Vanderwaal said she wanted a tree house built by Pete Nelson; the 13-year-old singer-songwriter's wish comes true.