The chart-topping singer hits the stage for a good cause in Las Vegas. Plus: Usher, Katie Holmes, Lauren Conrad and more
Credit: RD / Leon / Retna Digital
Published: Friday Sep 19, 2008 | 05:10 PM EDT
More from PEOPLE
- Bestselling Author Brad Meltzer Helps Save Former Teacher's Life by Finding Her a Kidney Donor
- The Best Photos from the Week of August 24- August 30, 2015
- FROM SI: Ronda Rousey Warns She Isn't a 'First Date Kind of a Girl'
- Author Apologizes for Saying Idris Elba Was 'Too Street' to Play James Bond
- Serayah on Being in Taylor Swift's Squad: 'It's Just a Bunch of Girls Hanging Out'