Us EXCLUSIVE: Britney Ditches Paris as Awards Show Co-Host  —  After nearly a week of clubbing, partying and shopping in LA with new BFF, Paris Hilton, Us has learned exclusively that Britney Spears has abruptly pulled out of co-hosting with the heiress on the Fox Billboard Music Awards, scheduled to air live on December 4.

Report: K-Fed was having fling with porn star  —  But 'they're just friends who have sex,' says a source  —  Add this to the reasons that Britney Spears had to dump her hubby: Kevin Federline reportedly was having an affair with a former porn star a full month before Spears filed for divorce in November.

Snoop Dog Arrested Outside "The Tonight Show"  —  Rapper Snoop Dogg was arrested Tuesday night for allegedly possessing drugs and a firearm.  —  Detectives from the Burbank Police Department served a search warrant on Snoop, whose real name is Calvin Broadus, outside NBC studios in Burbank at approximately 7:30 p.m. this evening.

Sofia Coppola Has a Baby Girl  —  Oscar winner Sofia Coppola has given birth to her first child, a baby girl named Romy, her rep confirms to PEOPLE.  —  The baby was born on Tuesday in Paris.  The father is Coppola's boyfriend, Thomas Mars, the French singer of the band Phoenix.

NICOLE KIDMAN PREGNANT?  NOT LIKELY  —  Nicole Kidman Pregnant?  Not Likely  —  The tabloids are full of stories speculating that Nicole Kidman is pregnant.  The "evidence" seems to be a slightly enlarged midsection that comes and goes in paparazzi photos.

Britney Spears Did it AGAIN Last Night  —  If you went to bed last night thinking it couldn't get any worse for Britney Spears, welcome to today.  It has.  For the THIRD time this week, Britney Spears has gotten out of a car with a super short dress and no panties, this time at a Santa Monica gas station late last night.

KID KEPT KIDS AS PAM PARTIED  —  FRIENDS of Kid Rock (real name Bob Richie) say his marriage to Pam Anderson ended after four months because he was tired of staying home with the kids while she was out partying.  —  Yesterday, we told you how the final straw came when Richie exploded …

Hartnett's New "Mystery Woman" Revealed  —  On November 19, Australia's Daily Telegraph ran photos of Josh Hartnett, 28, at a Sydney, Australia, airport with a "mystery woman" who was later identified as actress Amber Sainsbury, his costar in the upcoming horror-thriller 30 Days of Night.

Newly Single Hilary Duff With Newly Shaped Teeth?  —  When Hilary Duff stepped out last year with a long face, it wasn't because the singer-actress was down in the dumps — it was that her newly veneered teeth were too big for her mouth!  "She probably had her teeth recontoured or reshaped to fit her smile …

Kid says Pam's a Partier, and He Ain't Kiddin'  —  Now it's his turn: Kid Rock's friends say that he had to end his marriage to Pam Anderson because he was sick and tired of taking care of their kids — while Pam would stay out 'til all hours.  —  Yesterday, it emerged that Pam couldn't deal …

KEVIN'S AFFAIR BEHIND BRIT'S BACK  —  If Britney Spears doesn't have enough reasons to be glad she's dumping Kevin Federline, here's another: A source tells Star that in early October — a month before Brit served him with divorce papers — Kevin and porn-star-turned-exotic dancer Kendra Jade began a sex-fueled affair!

Richie is raisin a figure from her past  —  Nicole Richie is madder than ever at her former stylist - unless that's somebody else she's calling a wrinkly anorexic.  —  On her MySpace page Monday, the "Simple Life" star posted a "blind item" that you don't need Lasik surgery to see is about Rachel Zoe …

Michael Douglas has near-miss in Bermuda  —  HAMILTON, Bermuda - Actor Michael Douglas may prefer to conduct ceremonies with both feet firmly planted on the ground from now on.  —  Douglas briefly lost his footing while standing in a cherry-picker basket 25 feet in the air to christen a new art museum in Bermuda.

Reese Bans Cell Phones On Set  —  Reese Witherspoon's tactic for controlling false rumors: Stop them before they start.  —  A source on the L.A. set of Rendition says the actress, 30 (who split from husband Ryan Phillippe, 32, in October) has banned cell phones so no photos of her and costar Jake Gyllenhaal get out.

George Clooney Rags on Brad Pitt  —  George Clooney playfully ragged on good friend Brad Pitt on last night's The Late Show with David Letterman.  George knocked Brad for also winning the title of "People's Sexiest Man" twice.  George joked of Brad: "He was a little upset.  It sort of knocked his thing down a notch."

Perfect Cameron Diaz  —  Cameron Diaz drives boyfriend Justin Timberlake crazy because she's so perfect.  —  The 'Charlie's Angels' star insists she is faultless and that's why her heartthrob lover gets frustrated with her on occasions.  —  Cameron told Britain's OK! magazine: "I don't know if I do anything to annoy Justin.