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A bevy of big-time celebs like Katie Holmes, Kim Kardashian and Usher have joined forces with Alicia Keys and her Keep a Child Alive charity to raise money for people in India and Africa affected by HIV/AIDS. To promote the cause, Keys has launched a new campaign called "Buy Life" which showcases the stars in bar code-emblazoned t-shirts. Keys tells, "With the launch of our Buy Life campaign, I am confident less people will needlessly have to die because of lack of proper care which means more children will still have parents to raise them and guide them. I'm never more inspired, then when I'm doing this!" Discover the many ways to donate to the cause, plus buy your own charitable shirt at Click through the gallery below to see all the famous faces involved.