Jennifer Aniston & John Mayer: Broken Up?  —  Jennifer Aniston and John Mayer may have called it quits.  —  That's the rumor I'm hearing.  A source says that the pair's on-again, off-again relationship may have ended when Aniston returned from overseas, where she was promoting Marley & Me.

BROWN READY TO CLEAN HOUSE  —  CHRIS Brown is said to be through with his manager, whose sexy text-messages supposedly sparked the fight that ended with his alleged beating of Rihanna.  —  Brown is “looking for a whole new team” to replace his current crew, “starting with his manager, Tina Davis,” said our source.

Rep: Anne Heche Welcomes a Son!  —  Anne Heche and beau James Tupper welcomed their first child together over the weekend, her rep confirms to Usmagazine.com.  —  Atlas Heche Tupper weighed in at six pounds, 12 ounces, the rep adds.  —  Heche finalized her divorce from ex Coley Laffoon …

Madonna Makes Surprise Appearance at Britney's NYC Show  —  Madonna made a surprise appearance at Britney Spears' sold-out show Circus show Wednesday in New York City.  —  Shortly before Spears, 27, took the stage at the Nassau Coliseum on Long Island, Madonna, 50, arrived with her manager Guy Oseary …

Bristol Palin & Fiancé Split  —  Levi Johnston and Bristol Palin  —  Bristol Palin and her fiancé Levi Johnston have broken up, two sources tell PEOPLE.  —  The split happened “a few weeks ago,” according to a source close to the couple, but it's unclear what precipitated it.

Britney Spears Has a Boyfriend, and It's...  Britney Spears isn't confining her comeback to the stage.  The “Gimme More” purveyor is at work on her personal life, too.  —  E! News has learned that Spears, 27, has been secretly on dates with her longtime talent agent, Jason Trawick.

Joaquin Pulled from Brawl — Pulling Our Leg Too?  —  Joaquin Phoenix jumped off the stage and attacked a fan at a Miami show last night — but, like anything with him these days, the whole thing could be one big set up.  —  It all went down at LIV nightclub at the Fontainebleau …

Patrick Swayze: It's Not ‘The End’ for Me  —  Patrick Swayze wants to stay positive.  —  Reacting to a tabloid story that says he's nearing “The End” (and showing photos of him appearing gaunt), The Beast star is slamming what he calls “inaccurate” reports about his year-plus battle with pancreatic cancer.

EXCLUSIVE: Mickey Rourke Signs For Russian Villain Role In ‘Iron Man 2’  —  Scarlett Johannson Makes “Terrible” Deal To Replace Emily Blunt In ‘Iron Man 2’  —  He may not have won the Oscar, but Mickey Rourke is taking his nomination to the bank.  I just heard that ICM has scored its second casting deal for Marvel's Iron Man 2.

Shannen Doherty Reveals She'll Be Back on 90210  —  Women of 90210, you best hold on to your men!  —  Shannen Doherty herself just spilled to us that her man-stealing character Brenda Walsh will be coming back to America's most famous zip code for the first-season finale of the CW's 90210.

Musical ‘Heathers’ headed to stage  —  ‘Witch Mountain’ helmer Andy Fickman developing prod'n  —  Get ready for “Heathers: The Musical.”  —  The influential 1988 teen dark comedy, which launched the careers of Winona Ryder, Christian Slater and scribe Dan Waters, is stagebound in a production …

Scoop: Ashley Jensen exits ‘Ugly Betty’  —  Ashley Jensen is leaving Ugly Betty at the end of the season, and I know this because... she was just cast as a series regular in the CBS comedy pilot Accidentally on Purpose!  —  A rep for CBS/Paramount confirms that Jensen is joining the cast of Accidentally …

50 Cent Screws Rap Rival with Revenge Porn Tape  —  2Pac vs Biggie, it ain't — but now the beef between 50 Cent and Rick Ross has reached a whole new level ... and it involves a homemade porn tape.  —  A source tells TMZ 50 Cent plans to release a porn tape featuring one of Rick Ross' baby mamas.

Third ‘Twilight’ film finds director  —  Juan Antonio Bayona will helm ‘Eclipse’  —  Summit Entertainment has tapped Spanish director Juan Antonio Bayona to direct “Eclipse,” the third pic in the “Twilight” vampire series.  —  Summit, which had no comment Wednesday, is expected to make the official announcement soon.

JENNIFER LOVE HEWITT - LOVE HEWITT DATING TV CO-STAR? … Actress JENNIFER LOVE HEWITT is moving on from her broken engagement with the help of her GHOST WHISPERER co-star JAMIE KENNEDY, according to reports.  —  The 30-year-old star endured a painful split from fiance Ross MCCall in December …

Mandy Moore Quietly Weds Ryan Adams  —  Mandy Moore and rocker Ryan Adams have wed, reps for both stars confirm to Usmagazine.com.  —  They tied the knot Tuesday in Savannah, Georgia, adds the reps.  —  The secret wedding should come as no surprise.  —  After confirming her engagement …