EXCLUSIVE: KATE WALSH'S HUSBAND FILES FOR DIVORCE  —  ET breaks news that “Private Practice” star Kate Walsh's husband Alex Young has filed for divorce from the actress.  ET was first to obtain the divorce filing.  —  In divorce papers, Young cites irreconcilable differences as the reason for the split.

Macaulay's Sister Dies  —  We've learned Macaulay Culkin's sister died yesterday after being struck by a car.  —  Law enforcement sources tell us Dakota Culkin was walking on the west side of Los Angeles Tuesday when she stepped off a curb and was struck by a car.

Paltrow hoping to save marriage to Coldplay's Martin  —  Gwyneth Paltrow is desperately trying to save her troubled marriage.  —  Amid recent reports of their rocky romance, Paltrow and her husband, Coldplay rocker Chris Martin, are holed up in their London home “trying to make their marriage better …

Aubrey O'Day All Wet And On Her Knees  —  Well, if these aren't the most appropriate pictures of Aubrey O'Day I've ever seen, then I don't know what are.  It's Aubrey sopping wet, and on her knees in some behind-the-scenes pictures from her Complex magazine photoshoot (you know, the one where Aubrey O'Day was topless).

Usher Welcomes Baby No. 2  —  Usher and his wife, Tameka  —  It's a boy - again!  —  Sources confirm to PEOPLE that Usher and his wife Tameka have a new addition to the family: a baby boy born on Wednesday.  —  The new Raymond (whose name has not yet been released) joins older brother Usher Raymond V, who turned 1 on Nov. 26.

Is that dress REALLY supposed to look like that Lily or did you fall out of the Nobu broom cupboard? … Lily Allen may well appear to be scratching her head after she was seen leaving her favourite restaurant Nobu, in Central London last night.  —  But it was her unusual choice of dress …

Heath Ledger Golden Globe nod boosts Oscar momentum  —  LOS ANGELES (Reuters) - Heath Ledger's final role as the demented Joker is turning out to be one of his best.  —  The Australian actor, who died in January of an accidental prescription drug overdose, was nominated for a Golden Globe …

Jennifer Aniston poses nude with just a necktie in her most provocative shoot ever … Posing provocatively in nothing but a striped necktie, Jennifer Aniston has appeared in her most sultry photoshoot to date to grace the front cover of American GQ magazine.

NOT OUR BABY  —  ASHLEE Simpson and Pete Wentz are trying to drum up some cash by selling photos of their baby, Bronx Mowgli - but so far, no takers.  A celebrity weekly insider told Page Six, “Pete and Ashlee have approached every single celebrity magazine with offers to sell their first photos, but nobody wants them.

Not Again  —  Another story about BABIES!!!  This is the third one of the day.  The D in Dlisted obviously stands for diapers.  Makes sense.  —  So....Harvey, Junior and Princess Tiamammamiawhatever might be getting yet another sibling.  The Daily Star claims that Katie Price has a human growing inside of her.

JUST ASKING  —  WHICH actress who plays a teen on a hit TV show incorrectly insists she's a size zero?  Employees at a clothing line have to remove all the bigger-size labels from garments they send her to her to keep her happily deluded . . . WHICH handsome TV host is thought by patrons of at least one gay bar to be in the closet?

EXCLUSIVE: Britney's Christmas Message  —  Check out our EXCLUSIVE Christmas message from Britney.  How cute are Jayden and Sean Preston?  Adorable!  —  Jen, Britney's British Bitch

Mel Gibson: Britney Is Doing “Great”  —  On Wednesday, it was announced that Britney Spears' latest album, Circus, has topped the charts — and her pal Mel Gibson couldn't be more proud.  —  “She's great,” he told Usmagazine.com at the Ninth Annual Global Green Sustainable Design Awards in NYC on Wednesday.

Elisha Cuthbert: Hot On The “24” Set  —  Narrowly avoiding an open flame, Elisha Cuthbert was spotted on the set of her hit television show “24” yesterday afternoon (December 10).  —  The “Girl Next Door” hottie was busy filming a scene in which her character, Kim Bauer …

Kate Winslet and Leonardo DiCaprio: EW's Exclusive Reunion Q&A!  —  More than a decade ago, they stepped aboard “Titanic.”  They've finally reunited for “Revolutionary Road,” and this time it's a marriage that hits an iceberg.  A surprising talk with two true friends.  —  PHOTOGRAPH BY BRIGITTE LACOMBE