Alicia Keys, Jay-Z, Beyoncé At All-Star Charity Ball

Alicia Keyswas joined by Jay-Z, Usher,Jennifer Hudsonand others at the annual Sade and Jay-Z. Whitney Houston,Uma Thurman and Kanye West, Justin Timberlakeand Katie Holmesin a series of adverts. “The whole idea is that if you're spending $100 on a pair of shoes or everything else we spend money on that we don't really need, why not use the money to save a life instead?” the star explained.