Mackenzie Phillips: I Slept with My Own Father  —  “Don't hate my father,” Mackenzie Phillips tells PEOPLE.  —  But in a tell-all book out Wednesday, the former childhood actress reveals that her dad, musician John Phillips of the '60s band the Mamas and the Papas, engaged with her in a long-term incestuous relationship.

EXCLUSIVE: Ellen Pompeo Welcomes a Baby Girl  —  Meredith Grey is a mom!  —  Grey's Anatomy actress Ellen Pompeo and husband Chris Ivery have welcomed their first child, a girl, her rep tells Usmagazine.com exclusively.  —  “Her name is Stella Luna Pompeo Ivery,” her rep tells Us.

Kevin Federline to Appear on Celebrity Fit Club  —  Kevin Federline is about to slim down.  —  The father of four, who was married to Britney Spears, is joining the cast of Celebrity Fit Club, a rep for VH1 confirms to PEOPLE  —  Also appearing on the seventh season of the show …

Lamar's Baby Mama on Khloé Nuptials: “I Thought It Was a Joke”  —  If you think you're surprised by Khloé Kardashian and Lamar Odom's upcoming quickie wedding on Sunday, imagine how the groom's ex-fiancée must feel.  —  Odom, 29, began dating Liza Morales when they were both just 17 …

Diablo Cody adapting ‘Sweet Valley High’  —  “Sweet Valley High” filtered through Diablo Cody?  —  That is exactly what Universal is doubling down on, in negotiations to pick up the rights to the long-running book series, with Cody attached to adapt.  Cody also will produce with Mason Novick as well as Marc Platt.

Jaclyn Smith Alive and Well!  —  Honduran media reported earlier that Jaclyn Smith was rushed to the hospital, the victim of an apparent suicide attempt.  El Heraldo, a local newspaper, which first broke the news, is now reporting that it was NOT Jaclyn Smith who was taken to the hospital …

Fincher Makes Facebook Connections  —  Columbia Pictures and director David Fincher have set its core cast for “The Social Network,” the Aaron Sorkin-scripted drama about the formation of Facebook.  —  Jesse Eisenberg will play founder Mark Zuckerberg, Justin Timberlake will play Sean Parker …

It's Baby Time for Jen Aniston!  —  Jennifer Aniston has never hid the fact that her biological clock is a-ticking and who could blame her: She turned 40 in February and most of her Hollywood pals — like Courteney Cox and Sheryl Crow — are already mothers, a role she's ready to embrace.

EXCLUSIVE: Jon Gosselin's Girlfriend Gets a Boob Job!  —  Jon Gosselin “soul mate” Hailey Glassman went under the knife for breast surgery on Sept. 16, Star magazine is reporting exclusively.  —  “Hailey's been very self-conscious about her breasts,” a friend told Star.  “She didn't like the way they looked.”

Producers acquire Meyer's ‘Host’  —  Trio use own money to buy screen rights to novel  —  Producers Nick Wechsler, Steve and Paula Mae Schwartz have used their own money to acquire screen rights to “The Host,” the first adult novel written by Stephenie Meyer, author of the “Twilight” series.

Travolta First Witness — Smoking Gun to Follow  —  We've learned John Travolta will be the first witness called today in the extortion trial over his son's death — and after John steps down from the stand, there will be a legal dogfight in the courtroom over what could be the smoking gun in the case.

‘House’ exclusive: Wilson moves on (and you'll never guess with who)!  —  Wilson will at long last exorcise the ghost of ex-girlfriend Amber this season on House.  According to executive producer Katie Jacobs, Robert Sean Leonard's long-grieving alter ego will sever his final tie to Amber by year's end.

Karina Smirnoff Strips Down for PETA  —  “Dancing with the Stars” pro Karina Smirnoff would rather shimmy in the nude than wear fur.  Yowza!  The sexy dancer was shot by celeb photographer Robert Sebree for PETA's new ad campaign.  —  “I did wear fur, especially when I was growing up in the Ukraine,” Smirnoff tells PETA.