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 …

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.

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).

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 …

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.

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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

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?

Alyssa Milano Because I was Wrong  —  I'd like to make an apology to Alyssa Milano.  When she first came out with the idea of making a women's sports team clothing line I never thought it would work.  I even went so far as to make fun of it.  But 2 years later it's still going strong, and I'm man enough to admit I was wrong.

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

Rachel McAdams as Irene Adler — FIRST PICS  —  Here are the first pictures of Rachel McAdams in hair and make-up for her character, Irene Adler, in Guy Ritchie's detective flick, Sherlock Holmes.  —  The 30-year-old actress was spotted in London on Thursday wearing brown shoes and pinstripe pants.