Stefani shows off her toned look and her little guy Kingston in L.A. Plus: Katie Holmes, Hugh Grant and more

SEXY BACK

Alicia Keys reveals herself to be a sexy sidekick to U2 frontman Bono at the New York premiere of We Are Together on Thursday. The two singer humanitarians came out to support the Tribeca Film Festival documentary, which chronicles the lives of children in a South African orphanage.