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Mary J. Blige as Brook Lynn

The alter-ego for the R&B star plays a role on Blige's album "The Breakthrough." The album credits list the Brook Lynn character as a guest star, and she arrives to spit nastier rhymes that one would associate with Blige. Like Beyonce's Sasha Fierce but predating her, Blige's Brook Lynn is a...

Stephen Lovekin, Getty Images