What Tina Wants  —  Tina Fey has rules.  They've guided the 38-year-old writer-comedian through marriage, motherhood, and a career that went into hyperdrive this fall, when her Sarah Palin impression convulsed the nation, boosting the ratings of both Saturday Night Live and her own NBC show, 30 Rock.

Simon Cowell: Britney Spears Is in Awe of Me  —  Britney Spears won over one of America's toughest critics with her string of comeback performances last week: Simon Cowell!  —  As part of a promotional tour to tout Tuesday's release of her new album, Circus, Spears, 26, performed “Womanizer” on Cowell's X-Factor Saturday.

Ivana Trump separates from fourth hubby Rubicondi  —  NEW YORK - Ivana Trump has issued a statement confirming reports of marital discord with Italian entrepreneur Rossano Rubicondi.  —  Trump, who married Rubicondi in April, says she filed a legal separation agreement three months ago.

So Plaxico Burress Walked Into a Bar...  Details are coming together about what happened after Giants receiver Plaxico Burress pulled a Suge Knight on Friday night and accidentally shot himself in the leg at the midtown club Latin Quarter.  The Post reports that a series of efforts to hide the injury …

Madonna & A-Rod Head to Mexico City  —  Photo by: Ronald Asadorian / Splash News Online; Pascal Le Segretain / Getty  —  Coincidence?  —  Madonna and Alex Rodriguez were both spotted in Mexico City last weekend.  —  The two have not confirmed their romance.

Ricki Lake: 'I Can't Believe I Was Fat'  —  Ricki Lake has trimmed 140 lbs. from her all-time top weight of 270 pounds - and says she is holding steady.  —  “I can't believe I was a fat person for most of my life,” the former talk show host, rocking a sexy black Herve Leger dress (size small) …

Travis Barker and DJ AM to reunite for performance  —  LOS ANGELES - Punk musician Travis Barker and celebrity disc jockey DJ AM will perform together for the first time since the duo survived a fiery plane crash in South Carolina.  —  The former Blink-182 drummer and DJ AM …

Downey Jr. Knocked Out on ‘Holmes’ Set  —  A freak accident on the set of Robert Downey Jr.'s latest movie was less ‘Iron Man’ and more iron chin.  —  The Sun reports that Downey Jr. was knocked unconscious when a 350-pound stuntman accidentally punched him during a scene they were filming …

EXCLUSIVE: ER Star Parminder Nagra Pregnant With First Child  —  ER star Parminder Nagra and her photographer beau, James Stenson, are expecting their first child this summer, the actress confirms to Usmagazine.com exclusively.  —  “We are thrilled and overjoyed at the prospect of becoming first time parents,” Nagra tells Us.

Brad Pitt: The Best Meal Angelina Jolie Has Cooked for Me Is Cereal  —  Don't expect Angelina Jolie to whip up a fancy dinner for her six kids and beau Brad Pitt.  —  In the new issue of chef Jamie Oliver's eponymous magazine, Pitt, 44, admits the best meal Jolie has ever cooked for him was “cereals,” according to the U.K. Guardian.

KATE BOSWORTH INTERVIEW  —  Kate Bosworth, through no fault of her own, is one of those young Hollywood actresses whose personality has been writ large in their absence; altogether human complexities expediently forgotten in favour of half truths, tossed into the frying pan of tabloid hysteria …

Exclusive: Beverly Hills Cop IV Story Details!!  —  With everything 1980's being either made, remade, or re-imagined, one of our favorite readers and insiders who we haven't heard from in a hot minute, EL CHAVO has the goods on Eddie Murphy's 80's update of Beverly Hills Cop 4.