This '80s pop music/R&B artist found renewed fame and success during her eight-year run with "Idol." In 2011, she rejoined Cowell at the judges table for one season of "X Factor," but was not asked back for another. Next year, she will join the cast of judges on the Australian version of "So You Think You Can Dance." —XFINITY Entertainment Staff (Photos by Kevin Winter, Frederick M. Brown/Getty Images)
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