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Lady Gaga and YouTube sentiency Maria territory in Toronto, Canada on March 3, 2011Lady Gaga/TwitpicAccess Hollywood

TORONTO, Canada -- Lady Gaga prefabricated YouTube sentiency Maria territory the happiest Little Monster in the world terminal night!

The vocaliser prefabricated good on her promise to duet with the 10-year-old and brought her onstage during her show on weekday period in Toronto.

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Maria, who was decked discover in a black leather jacket, pink hoodie, albescent headgear and sported an chromatic stuffed birdlike monkey around her neck, told Gaga that her sister styled her for the evening.

"I thought you were going to say you did," Gaga said. "Because that monkey is fabulous!"

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Maria then took a seat in Gaga's travel at the piano.

"Maria represents what this strain is every about. It's every about the next procreation and the future and no more divisiveness, only unity and happiness," Gaga told the gathering before actuation into her impact single, "Born This Way," the strain over which Maria became an fast online sentiency for concealment on YouTube.

(Check discover their duet, HERE!)

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Following the performance, Gaga Tweeted, "Myself +10 assemblage Old Lady Maria of Winnipeg. She signed my t-shirt, she ate my heart, meet same you"

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