Simpson-Wentz and her 3-month-old son arrive at London's Heathrow Airport. Plus: Christina & Max, Britney Spears, Justin & Jessica and more

THE MAIN ATTRACTION

Ready to show the world what she's got, Britney Spears kicks off her 32-city Circus tour Tuesday at the New Orleans Arena in Louisiana. Though the pop star has yet to hit her stride, she put fans into a frenzy, who raved, "She looks amazing!"