IMPACT Artist: Kelly Clarkson New Album: Kelly Clarkson releases 'Piece By Piece' Tuesday, March 3rd Read More

MDNA tour

(Frank Micelotta/Getty Images)

Madonna Enlists Britney Spears and Christina Aguilera for U.S. Tour

Maybe you heard about what happened the first time these three appeared on stage together?

08/27/2012

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