The youngest Jonas Brother takes a b-day walk with his pup in Toluca Lake, Calif. Plus: Britney Spears, Gwyneth Paltrow, Lindsay Lohan and more

MAKING A 'SPLASH'

The Hills star Lauren Conrad makes a social stop Monday to celebrate the unveiling of Sony VAIO's My Graphic Splash, a new collection of limited-edition computer notebooks, at New York City club Mansion.