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Across the nation, Miley Mania and Hannah Hysteria have taken over tweens and teens. So The Oprah Show invited 100 of Miley's biggest fans to the studio for a stunning surprise! "They all think they're here for the 'Miley Cyrus Biggest Fan' contest and they have no idea that Miley is in the building," Oprah says. "I just hope they can stand it."
Before they greet the fired up superfans, Miley has a word of advice for Oprah. "It's gonna be so loud. I recommend earplugs," she says.