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As rumored, Britney Spears joined Madonna on stage during her show at L.A.'s Dodgers Stadium on Thursday.
Clad in a white tuxedo-style shirt and black wide-leg trousers, Spears walked on stage -- to thunderous applause -- at the end of Madonna's tune "Human Nature," singing the last verse.
Pointing to Spears, Madonna then yelled, "She's not...
