Cyrus keeps her pup Sophie close on the L.A. set of her new music video. Plus: Nick & Mariah, Beyoncé, Nicole Kidman and more

LEADING MAN

Trying for a quick getaway, Justin Timberlake takes the lead, guiding girlfriend Jessica Biel to their ride after dining with friends at his barbeque joint, Southern Hospitality, on New York's Upper East Side.