The singer-actress gets an open-door welcome as she rolls into town. Plus: Britney & Sean P., Maggie & Peter, Tara Reid and more

GIRL'S BEST FRIEND

Armed with a box of Godiva confections, Sienna Miller kicks off the year's biggest chocolate-giving occasion – Valentine's Day – by unveiling the company's Hearts on Fire $1 million diamond shopping spree contest in Century City, Calif., on Tuesday.