The chart-topping singer hits the stage for a good cause in Las Vegas. Plus: Usher, Katie Holmes, Lauren Conrad and more

'FAIR' MAIDEN

Salma Hayek is simply stunning on the red carpet at a Vanity Fair party Thursday in Sevilla, Spain. The actress may have stepped out solo, but she recently spent time with her former fiancé Francois-Henri Pinault and 11-month-old daughter Valentina at a party in Los Angeles.