Relive the teen's performances of Michael Jackson, No Doubt, Janis Joplin and more
Updated: Thursday May 07, 2009 | 12:40 PM EDT
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Relive Allen's performances of Michael Jackson, Donna Summer, Kanye West and more
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Singing Aerosmith's "I Don't Want to Miss a Thing" from Armageddon on movie night, Allison got a hero's tribute from Simon, who crowned her "the girls' only hope of winning."
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