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

STAR ARRIVAL

A solo Lindsay Lohan steps out Monday at a premiere party for the new season of Ugly Betty at High Bar in New York City. The actress will appear in five episodes of the ABC show, which returns Sept. 25.