Beyoncé

Primary Occupation: Singer.
Outside Ventures: Songwriter, actress, and fashion designer.

If Beyoncé knows anything, it's how to market herself. Girlfriend went from being one-fourth of Destiny's Child, to a solo act, to a leading actress, to…a branded cell phone? That's right! B's newest endeavor is the Samsung limited edition B'Phone. Now, that's entrepreneurship!

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