JEALOUS DIAZ  —  CAMERON Diaz is not over Justin Timberlake just yet, and things got heated when she saw her ex chatting up Jessica Biel in L.A. after the Golden Globes.  Sources say the temperamental star "blew up" at Biel after she saw Timberlake flirting with her.

Paris' BFF Kim K's Sex Tape — It's a Pisser  —  TMZ has confirmed the existence of a raunchy sex tape starring Paris Hilton's best friend Kim Kardashian and Brandy's brother Ray J — and we're told the tape is leaving Paris high and dry.  —  A source tells TMZ that he previewed the tape …

Oops!  Is Britney pregnant again ?  —  Plus, Paris welcomes home sweetie with romantic flair  —  Oops, did she do it again?  —  Britney Spears's friends believe that the baby-popping singer may be pregnant again, according to In Touch Weekly.  —  The friends' concern may help to explain …

Kate Moss celebrates 33 with a bang  —  Even London's most elegant supermodel can start to look a bit frayed at the edges after a night out on the town.  —  Kate Moss celebrated her 33rd birthday on Tuesday night in true Kate-style with her boyfriend (maybe fiance, maybe husband) Pete Doherty and a group of friends.

Us Exclusive: Lohan Enters Rehab  —  Lindsay Lohan entered the luxe rehab facility Wonderland Center in Los Angeles' Laurel Canyon on Wednesday afternoon at 2:30 p.m., Us has learned.  —  "I have made a proactive decision to take care of my personal health," Lohan tells Us Weekly through her rep, Leslie Sloane-Zelnick.

WEDDING BELLS FOR NICK & VANESSA  —  Nick Lachey has popped the question to gorgeous girlfriend Vanessa Minnillo - and the couple plan to marry this spring.  —  "They're moving forward with plans for an April wedding," a close friend told The ENQUIRER.  The engagement comes slightly …

RED-CARPET REGRETS?  —  PRODUCERS of the Golden Globes telecast were less than pleased Monday night with Maria Menounos' interviews with winners as they walked offstage.  A backstage tipster said the producers "were getting antsy" watching Menounos chat with celebs, and one said, "She's just terrible."

GISELE TACKLES QB TOM  —  BRAZILIAN supermodel Gisele Bundchen has apparently sacked New England Patriots quarterback Tom Brady.  The stunner, dressed down "in jeans and a T-shirt," was spotted Sunday standing outside his locker room, "just kind of leaning against the wall," a source told the Boston Herald's Inside Track column.

T.R. Knight: Isaiah's Slur Made Me Come Out  —  T.R. Knight says hearing Isaiah Washington call him a "faggot" on the set of Grey's Anatomy gave him the courage to come out of the closet - and that he's speechless that Washington on Monday denied using the word.

Amazon.com's Mideast turmoil  —  Jimmy Carter's troubles are now spreading to Jeff Bezos.  Ten thousand people have signed a petition urging a boycott of Bezos' Amazon.com over a review of the former President's controversial book, "Palestine: Peace Not Apartheid."

Ask Ausiello  —  Question: Yay!  Grey's won best drama at the Globes!  — Megan  —  Ausiello: And it all went downhill after that.  More on Isaiah's latest meltdown in a sec. First, I wanna unload some Lost scoop that's been weighing down my hard drive since Sunday.

Mischa Barton Bikini Pics  —  So other than walking around in a bikini and making funny faces, I really have no idea what Mischa Barton has been up to.  She might be making a movie, or doing a new TV show, but I really can't be bothered to check.  —  And really, there isn't really anything …

BLING KING CALLS STARS FOR TRIAL  —  JEWELER to the stars Jacob Arabov is calling on his celebrity clients to testify as defense witnesses at his upcoming federal money-laundering trial.  —  Rappers Sean "Diddy" Combs and Jay-Z, songstress Mariah Carey and Los Angeles-bound soccer great David Beckham top …

A world of candids  —  (click on thumbnails for larger images)  —  Patrick Dempsey out for a bike ride with his daughter  —  Nicole Richie at a salon going back to blond  —  Mischa Barton on the beach with Ziggy  —  Mandy Moore and DJ AM in Beverly Hills  —  Leonardo Dicaprio arriving in Japan to promote The Departed

Sienna Miller and Josh Hartnett Get Cozy  —  New couple alert?  Sienna Miller and Josh Hartnett certainly seemed cozy at Hollywood's Chateau Marmont on Tuesday night.  —  Miller, 25, and Hartnett, 28, sat side-by-side on a couch in the hotel restaurant's living room area …

Tom Cruise Hijacks Posh's Spotlight  —  It seems Posh Spice took a workshop in P.R. whoring from Tom Cruise.  —  The two megastars, along with Katie Holmes, hit the only place in Hollywood where they had zero chance of flying under the paparazzi radar yesterday— the Ivy restaurant on Robertson.

Becks and His Boy Brooklyn  —  David Beckham was spotted picking up his 7-year-old son Brooklyn from school earlier this past Monday in Madrid, Spain.  The father-son pair walked hand-in-hand before heading home...  Becks was also spotted lunching with Real Madrid teammates yesterday afternoon.