X17 XCLUSIVE - 4 AM THIS MORNING: HAPPY BIRTHDAY BRITNEY!  —  We're so happy for ya, girl!  Happy 26th!  It sure does seem like Brit Brit had a fantastical birthday celebration last night, and we're inviting you all to see some of it!  Part one begins at the Four Seasons …

MUCCA'S A PORN LIAR  —  SLEAZY Heather Mills flaunts her private parts in a sordid snap that finally nails her lies about her porn past.  —  Mucca squeezed into a red lace teddy with matching stockings for a hardcore photoshoot.  —  She pulled down her top to expose her boobs and splayed her legs in this classic porn magazine pose.

Will Smith: My Daughter Wants to Be Paris Hilton  —  Will Smith has already made a star out of one of his children - son Jaden, 9, who costarred in 2006's The Pursuit of Happyness.  Now, the acting bug has bitten again in the family.  —  Smith's daughter Willow, 7, makes her onscreen debut …

Distressed Amy Winehouse wanders the streets barefoot - in just her bra and jeans - at 6am  —  If Amy Winehouse's fans were hoping she might be trying to get her act together, these pictures will not provide much reassurance.  —  Barefoot, and clad only in her bra and jeans …

Jennifer Love Hewitt: 'A Size 2 Is Not Fat!'  —  It should be the time of her life for Jennifer Love Hewitt, instead the newly engaged actress is taking to the Internet to speak out about unflattering photos of herself snapped by the paparazzi during her Hawaiian getaway with fiancé, Scottish actor Ross McCall.

Jessica Simpson and Tony Romo's Late-Night PDA  —  The Dallas Cowboys had the weekend off - but quarterback Tony Romo still made plenty of passes.  —  Jessica Simpson and the NFL star flirted up a storm Saturday at Hollywood nightclub Teddy's, as the two helped Simpson's BFF, Cacee Cobb, celebrate her 30th birthday.

Whoa!  New Joker and Batman promo pics from THE DARK KNIGHT!!!  —  Ahoy, squirts!  Quint here.  I've been swabbing the deck of the Orca getting ready for the BNAT visitors.  In my latest break I found a nice little email in the inbox from the guy who runs a Spanish Language site called Uruloki.org.

BRIT UNCOVERED  —  Britney Spears (right with Paris Hilton) may have finally made a good decision.  The train wreck, who hasn't done much publicity for her new album, "Blackout," besides her daily run to Starbucks to get photographed, has pulled the plug on a potential Rolling Stone cover, said an insider.

Brad Pitt's N.O. housing efforts have Lower 9th Ward in the pink  —  Actor Brad Pitt is scheduled to announce plans to create more than 100 affordable, ecologically sound homes in the Lower 9th Ward.  This weekend, big pink houses were installed in the flood-ravaged neighorhood as symbolic stand-ins for those homes.

JUST ASKING  —  WHICH big Hollywood actress is about to come out of the closet?  She's been living with her girlfriend in a small town, where all the neighbors know, and the two are now engaged to be married...

Chelsy spends night with Harry  —  CHELSY Davy slipped into Clarence House yesterday and spent the night with her ex Prince Harry, the News of the World can reveal.  —  The lovelorn Prince invited her over in a cloak-and dagger operation to rekindle their troubled romance.

Well.......  Umm....errrr...well....at least Story Elfman will feel at home among the other aliens when the mothership comes!  —  Here's Jenna Elfman and baby Story at the Scientology Christmas Stories pageant last night in Los Angeles.  Sounds like fun.  A room full of loons dressing up like they were 12 and acting out gay stories.

Judge to "Idol" Screwup: You're Not Entertaining!  —  A Florida judge laid down the law to "American Idol" finalist Jessica Sierra, telling her, "Obviously the bar scene isn't working out so well for you."  —  The judge denied bond, which means Sierra will stay in the pokey after being busted …