Justin Timberlake’s support for his favored charity is worth $9.3 million. Paris Hilton’s? $538. The Daily Beast crunches the numbers to find the real value 50 stars -- from Madonna, Oprah, and Bono to Angelina, Bob Dylan, and Prince William -- bring to their causes.
For those to whom much is given, much is required. That explains why every celebrity from George Clooney to Jessica Simpson has a pet cause.
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