Star Tracks: Monday, November 1, 2010

Game on! Julianne Hough and Ryan Seacrest take their romance courtside to watch the Lakers beat the Golden State Warriors, 107-83, at Los Angeles's Staples Center on Sunday.

Jersey Shore star Paul "Pauly D" Delvecchio transforms his signature blowout into a side-swept mop top while channeling Justin Bieber at Moon nightclub at the Palms Casino Resort in Las Vegas on Saturday.

How picturesque! Jennifer Garner and her doll-of-a-daughter Seraphina, 1½, enjoy a leisurely moment together at a Los Angeles park on Friday.

After hosting her own party on The Strip, a suited-up Kendra Wilkinson swings by Heidi Montag's Halloween bash Saturday at Pure nightclub inside Caesars Palace in Las Vegas.

Are they reading each other's minds? Will Ferrell and the real Justin Bieber strike similar poses Saturday at the L.A. premiere of Ferrell's new animated comedy, Megamind.

What's the dinner special? Apparently it's Rihanna, who rocks her best come-hither look Sunday while performing on The X Factor in London.

Stephen Colbert and Jon Stewart – this year's most influential man – take the stage Saturday during the "Rally to Restore Sanity and/or Fear," a faux-political event held at the National Mall in Washington, D.C.

Boo! It's Jersey Shore's Mike "The Situation" Sorrentino, celebrating Halloween with hot ghouls at Jet nightclub in Las Vegas on Saturday. The reality star, who decided not to dress up, told PEOPLE he is flattered that costumes of his likeness are hot sellers.

What a trouper! An under-the-weather Kim Kardashian poses for delighted fans while filming Kourtney and Kim Take New York on Friday. "Rise amp grind! I have such a cold," she Tweeted.

Matthew McConaughey and Camila Alves take their star power to the other side of the world Friday, greeting admirers in Haikou, China, before the Mission Hills Star Trophy celebrity golf tournament.

Penélope Cruz accessorizes her burgeoning belly with a cozy scarf and sensible boots, arriving at her London hotel on Friday.

Anne Hathaway looks chic in comfy suiting, arriving Thursday for opening night of Angels in America on Broadway – a 7-hour epic starring Zachary Quinto.

Mad Men star Christina Hendricks ditches her vintage-era duds for a sweatshirt and skinny jeans on Friday while filming scenes for her new thriller, Drive, in Los Angeles.

Nicole Kidman, or a Grecian goddess? The Rabbit Hole actress makes for the perfect spokesmodel on Friday while launching OMEGA's new watch, the Ladymatic, in Beijing, China.

A dapper Bruce Springsteen looks like he hasn't aged a day at the U.K. premiere of The Promise: The Making of Darkness on the Edge of Town on Friday – a documentary comprised of footage of the rocker from the late 1970's.