The actress is up and running with costar Goran Visnjic at the Las Vegas debut. Plus: Jessica Simpson, Nick Lachey, Renée Zellweger and more

EVERYTHING GWEN

What's next? First, a clothing line. Now, her own camera: Renaissance woman Gwen Stefani (with Hewlett-Packard CEO Carly Fiorina) shows off the digital camera she designed for the company at its launch Friday in Las Vegas.