Star Tracks for Dec. 19, 2006

The Simple Life Star revs up for the holidays with a party thrown by BFF Paris Hilton. Plus: Beyoncé, Katie Holmes and more

'CHILDREN''S HOUR

Julianne Moore takes a night off from the lights of Broadway to warm up to Josh Hartnett at a New York City screening of her film Children of Men on Monday. The futuristic drama also stars Hartnett's Sin City costar, Clive Owen.