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Sienna and Jude | The Best Party Invite Ever From Clive Davis

Sienna Miller and Jude Law: Don't Dream, It's Over

Sienna Miller and Jude Law are over — kaput. It's for real. Stop asking me.

The reason: She's 25, he's 35; she's starting her life, he has three kids. It can't be simpler.

Sienna was the piece de resistance last night at the premiere of her new movie, "Factory Girl," about Andy Warhol's muse Edie Sedgwick.

Miller's parents were there with their respective spouses, as were Edie's brother John Sedgwick, her best friend Danny Fields and various Warhol superstars from years past.

The mood was heightened, too, because the after-party (at least the first one) was held underneath the Hotel Chelsea, scene of so many Warhol adventures back in the day.

But it was Sienna who stood out, even with square jawed co-star Guy Pearce accepting praise by the ton for his portrayal of Warhol.

I was just happy people finally got to see "Factory Girl" is a good movie, and not just some languishing-on-the-shelf disaster. Quite the contrary: "Factory Girl" is a fascinating romp, as well as treatise on the dangers of fame and drugs. They are a lethal combination, as John Sedgwick acknowledged.

"That's why people should see this movie," he said.

He should know: His sister died some 36 years ago. The eight Sedgwick siblings became just five (his two brothers had already died at young ages).

And John Sedgwick, who was raised mostly in California, told me he's never met his first cousin, actress Kyra. "We've never had the chance," he said. "We've always been in different places."

As for Sienna: She and Sedgwick have bonded.

"We finish each others' thoughts," he said.

He swears, by the way, that Edie's romance with Bob Dylan circa 1965 is completely accurate.

"Why would she have told me about it otherwise?" he asked. "It was before she was with Bob Neuwirth," he said, referring to Dylan's best friend. "It's funny how Dylan won't talk about it now."

Would his sister like Sienna, I wondered? "Very much," he said.

Like Edie, Sienna's the "it girl" of 2007, but she's no fly-by-night star. She's the real thing.

"I'm a free spirit!" she declared at the after-after party at the Gramercy Park Hotel.

She could only stay up so late: She had a press junket to do in the morning.

Sienna is not anorexic, a drug addict, a sex addict or any of those things. She is not a candidate for the cover of Us Weekly magazine.

Coupled with her performance in Steve Buscemi's "Interview," her star turn in "Factory Girl" can only make her the next Julia-Nicole-Gwyneth, the actress every good director wants in their next film.

Of course, yes, there is the friendship with Sean "Diddy" Combs. He was there last night, playing pool in the Gramercy bar in a three-piece suit, his Maybach parked out front.

Combs stays warm, by the way, with a large hat that any Hasid would be happy to own.

And some other guests last night included Russell Simmons, Damon Dash, actor-director Peter Berg and members of the "Factory Girl" cast like Jimmy Fallon, who's terrific as Edie's best friend and confidant in the film, Chuck.

Fallon was joined by his girlfriend, producer Nancy Juvonen and some of the "SNL" cast like Fred Armisen.

What will Sienna do now?

"Take a break for three months," she told me. "I've had a lot of great meetings with important directors. But I'm not going to do anything for a while."

There's no rush. One thing it would be smart for her to do: give up smoking the way she gave up Jude Law. She's probably the best on-screen smoker since Bette Davis. But in the future faking it would be a lot healthier!

The Best Party Invite Ever From Clive Davis

Clive Davis has outdone himself yet again. The head of BMG North America, the most successful and legendary music man alive, has sent out what is probably the best party invite ever.

It comes in a neat-looking black box, maybe the kind that usually contains a big piece of jewelry.

But inside, there are two things going on. One is the actual invitation to Davis' annual pre-Grammy dinner and show in Hollywood on Feb. 10. All right: Clive's invites are always pretty astonishing. They are each collector's items.

But the second item this year is pretty much the best thing I've ever seen in a party invite: A 4 gig SanDisk MP3 player.

And it's loaded. Not only does it come with a one-year free subscription to Rhapsody Music service, but it also comes stuffed with lots of hits.

The invite says there are 31 hits from Arista Records' history on the player. But mine seems to have dozens of hits from all parts of the record biz. There are also about 20 tracks from indie groups.

Knowing the business, I wouldn't be surprised if SanDisk simply kicked in 500 players to get their name out there among Apple, Creative, iriver and the other portable music player companies.

But still: It was a helluva idea, and a powerful statement. Clive Davis is the only one left in the music business who has panache, flair or cash to make it happen.

All this legend has left to do is produce Whitney Houston in some form at that dinner, and he will probably get some kind of medal. She doesn't even have to open her mouth. All anyone wants to see is that Whitney is OK.