A source confirms to UsMagazine.com that hip-hop phenom NickiMinaj, 26, has been tapped as a possible replacement, while The New York Daily News has pegged Jersey Shore's DJ Paul "Pauly D" DelVecchio, 30, as a potential opener. Also in the running? Recently single JoeJonas, 21, who's prepping for the release of his first solo CD this spring.
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