'Michael Forever - The Tribute Concert' - Christina Aguilera performs at- Navbharat Times Photodhamal

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Christina Aguilera performs at the Michael Forever the Tribute Concert, at the Millennium Stadium in Cardiff, Wales, on October 8, 2011. (AP Photo/Joel Ryan)

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Diversity perform at the Michael Forever the Tribute Concert, at the Millennium Stadium in Cardiff, Wales on October 8, 2011. (AP Photo/Joel Ryan)

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Prince Michael Jackson (C)wrestles with his brother Blanket Jackson as he encourages him to dance on stage for the finale of the Michael Forever the Tribute Concert, at the Millennium Stadium in Cardiff, Wales, on October 8, 2011. (AP Photo/Joel Ryan)

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Prince Jackson arrives on stage at the Michael Forever - The Tribute Concert, at the Millennium Stadium on October 8, 2011. (AP Photo/Joel Ryan)

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Jamie Foxx, left, and Christina Aguilera perform at the Michael Forever the Tribute Concert, at the Millennium Stadium in Cardiff, Wales, on October 8, 2011. (AP Photo/Joel Ryan)

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