People have turned to celebrities to find the latest in fashion, technology, and pop culture for decades. As of late, celebrities have been using their star powers to promote charities and causes.
Check out the slide show below to see everyone from Angelina Jolie to Rihanna and Katy Perry raising awareness.
20 Acts of Celeb Activism
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From Star-Studded Charity Events to Product Promotions
Published: Jun 12, 2009 Updated: Mar 24 2011