Robin Wright Penn Files for Divorce  —  Sean Penn and Robin Wright Penn  —  Robin Wright Penn has filed for divorce from her husband Sean Penn, PEOPLE has learned.  —  The papers, filed in Marin County, Calif., on Aug. 12, state that “both parties have already agreed to [shared] custody” …

Kim Kardashian and Reggie Bush Spotted Together  —  Are Kim Kardashian and Reggie Bush keeping up with each other?  —  Just three weeks after they amicably split, the pair were “all smiles” as they walked together Monday into a Ruth Chris Steak House in New Orleans, an observer tells PEOPLE.

Reality Star on the Run in Model Murder  —  Law enforcement tells us they now have a person of interest in the murder of a Playboy model who was found dead and stuffed in a suitcase in Orange County.  The man is Ryan Alexander Jenkins, who was a contestant on VH1 reality show.

Jon & Kate Plus Aggravation  —  We're told TLC is not happy with Jon Gosselin, but Jonnie boy may not care, because he has his sights set on a new show.  —  We're told Jon is in talks with a major production company — Endomol — to appear in a show called “Divorced Dad's Club.”

Britney Spears Does Top 10 List on Letterman  —  And the No. 1 reason to read this story ... Britney Spears in a bikini!  —  The pop star stripped down to a little black bathing suit and tucked a red hibiscus in her hair to deliver the Top 10 list Tuesday night in her return to The Late Show with David Letterman.

Joe Jonas and Kelly Clarkson to guest judge ‘American Idol’  —  Next to fill Paula Abdul's seat?  Joe Jonas and “American Idol” Season 1 winner Kelly Clarkson.  —  Sources tell Showtracker that the pair are nearing a deal to guest judge an audition round of the competition.

Kourtney Kardashian Agonized Over Whether to Keep Her Baby  —  Kourtney Kardashian's unplanned pregnancy forced the shocked reality TV star to make one of the most difficult decisions in her life: Would she have the baby or terminate the pregnancy?  —  “I definitely thought about it long and hard …

‘So You Think...’ Star Charged with Rape  —  A former choreographer for “So You Think You Can Dance” was arrested again for allegedly sexually assaulting four women — but this time he's actually being charged with a crime ... or eight, to be exact.  —  Cops say Alex Da Silva was arrested …

Who the Heck Is Kari Ann Peniche and How Did She Wind Up Naked With McSteamy?  —  Kari Ann Peniche is not just the hot mess with a troubled past who made the (temporary) jump from obscurity to infamy faster than you can say “Rick Salomon.”  —  Oh, no. The “quality hang” of Eric Dane and Rebecca Gayheart is so much more than that.

Johnny Knoxville to Have Another Baby  —  Jackass star Johnny Knoxville is going to be a dad for the second time, his rep confirms to Usmagazine.com.  —  His girlfriend of nearly a year, Naomi Nelson, is three months pregnant.  —  “Yes, they are expecting and very excited,” his rep tells Us.

Paris Hilton cleared in film publicity trial  —  A US District Court judge has ruled that Paris Hilton will not be made liable for the costs of her flop movie Pledge This!, reports BBC News.  —  The star had been sued for $8.3 million (£5 million) by the producers of the sorority comedy …

Celine Dion Is Pregnant with Second Child  —  Making good on her expressed desire to have more children, Céline Dion is pregnant.  —  A family member tells PEOPLE, “We learned this morning.”  While a rep for the 41-year-old singer confirmed the news to various outlets saying …

Brad Pitt: I Don't Have to Be a Nazi to Beat Ass  —  Brad Pitt may have turned into a humanitarian hottie since hooking up with Angelina Jolie, however the star of Quentin Tarantino's WWII flick “Inglourious Basterds” still gets a kick of it kicking others.  Literally.  —  “I just like kicking ass period.

Exclusive: ‘Caprica’ snags James Marsters!  —  Caprica exec producer Jane Espenson is using her powers as a charter member of the Whedonverse for good.  Sources confirm to me exclusively that Buffy all-star James Marsters is joining the Battlestar Galactica prequel for a sizeable arc.

Twighlight exclusive - Robert Pattinson: I haven't got a girlfriend  —  If you're over 18, then the name Robert Pattinson may not mean much to you.  But mention it to your teenage daughter and you'll be deafened by her squeals of excitement.  —  British hunk Robert, 23 …

Exclusive: Gina Torres Joins Gossip Girl  —  Gina Torres will appear on Gossip Girl this fall as Vanessa's mom, TVGuide.com has learned exclusively.  —  Gabriela Abrams, mother to home-schooled vid-kid Vanessa, is described as being warm and outgoing, which will certainly be a change of pace for this show …