Beckham keeps a close hold on son Romeo, 5, in London's Heathrow Airport. Plus: Jessica Simpson, the Hills cast, Ashton and more

GUEST STAR

Mariah Carey takes center stage while celebrating the return of season 3 of the Hills Monday at New York's Gotham Hall. The pop star performed her hits "Touch My Body" and "We Belong Together" during a live after show and then met with Lauren Conrad, Audrina Patridge and Whiteny Port backstage.