JEN LEAVES PITT MANSION

Jennifer Aniston is packing her bags.

The “Friends” star is leaving the six-bedroom, $13.5 million Beverly Hills home that she and Brad Pitt spent years redoing.

Sources spotted her on Wednesday night moving into the Los Angeles home of her hairstylist, Chris McMillan, while Pitt was in Tokyo promoting “Ocean’s Twelve.”

McMillan is the creator of Aniston’s famous “Rachel” cut, and the two are close friends. He’s been styling her hair since “Friends” began, and is her stylist on the set of her latest film, “Rumor Has It.”

As rumors continued to swirl over the exact cause of the breakup, sources close to Aniston insist it was Pitt’s close relationship with the sexy Angelina Jolie that was at the root of the couple’s problems. Their final trip to Anguilla was apparently part of their attempts to patch things up, but after a tense trip, the A-list couple decided to announce their separation.

“Jennifer is living in her Beverly Hills home,” countered her rep. “Angelina Jolie has nothing to do with her separation.”

LIP READING

John Mayer had a productive visit to New York last week – he got himself a new gal pal.

The Connecticut native was spotted in a lip lock with p.r. princess Lizzie Grubman at Marquee recently.

“He’s so tall, and she’s so much shorter, that he had to bend all the way over to kiss her!” said a witness. “All these girls were jealous and kept coming over to try to break them up.”

But Grubman denied smooching the singer.

“We were having a very close, private conversation in a loud place,” she said.

SEX, SHE WROTE

She’s barely legal, but she’s already a prolific sex columnist.

Native New Yorker Natalie Krinsky penned an explicit “Sex and the (Elm) City” column for the school paper while an undergrad at Yale, covering such seminal college subjects as walks of shame, “face-booking” and post-hookup phone calls.

Now graduated and the ripe old age of 22, the native New Yorker (who attended UNIS High School) is going national with an upcoming book, “Chloe Does Yale,” due in March from Hyperion.

Interwoven in the novel will be a collection of some of Krinsky’s columns, like “Is That a Bud in Your Pocket?”

“I crave talking about the things we shouldn’t be discussing,” she writes.

Shockingly, Krinsky’s own parents didn’t mind – although at first they didn’t know what their daughter was up to.

“My dad actually found out about it from an e-mail forward that was being sent around,” she said. “But they understood that it was something I wrote about, but not who I was.”

Krinsky’s former classmates shouldn’t bother trying to figure out who her characters correspond to, she said. They are all composites with fictional names.

She’s not done yet: “I’m thinking of a ‘Chloe’ sequel,” divulged the precocious Krinsky.

INSTANT MESSAGES:

* Once-popular “Girls Gone Wild” founder Joe Francis is trying to rebound to fame by starring in a new reality TV show from VH1. The show, which follows the D-list celebrity’s life, started production this weekend at “Girls Gone Wild” unofficial headquarters in Fort Lauderdale, Fla.

* Topher Grace’s dad, ad exec John Grace, is not too impressed by his son’s acting career, admits the star of “That ’70s Show.”

“There wasn’t a lot of excitement in the house [when I landed my sitcom],” Grace told New York magazine’s Logan Hill.

But Dad wasn’t any more impressed by the script for “In Good Company,” about a young ad salesman who pushes out an older one.

“My dad would always say to me, ‘Having more energy doesn’t mean you’re smarter.'”

* New Yorker writer and author Malcolm Gladwell definitely disappointed one person when he published his newest book, “Blink: The Power of Thinking Without Thinking.”

“My doorman, Jack, always thought I was a rapper,” he said to the crowd toasting him at Elaine’s for his Fast Company magazine cover.

“But then he saw the cover of the magazine when it came in the mail. He came up to me, shaking his head. ‘You’re not a rapper, are you?’ he said. He was really upset!”

* Vogue scribe Plum Sykes is engaged to her English boyfriend of a year, Toby Roland. Roland proposed over Christmas while the couple were on holiday in the U.K. No word on when the wedding will be.

The model-like Sykes was engaged once before, to hipster artist Damien Loeb, who famously broke up with her shortly before their planned wedding back in 2001.

* FYI: Disgraced former Police Commissioner Bernie Kerik showed his face at Mr. Chow’s on Monday night. “He was on a triple date with total bimbos” said a fellow diner. … Lean Cuisine Spa is launching its new organic food line at the Sundance Film Festival with a special delivery service for celebs like Lisa Kudrow, Keanu Reeves and Lucas Haas. … TV style maven Robert Verdi is dressing Desperate Housewife Eva Longoria for tonight’s Golden Globes, even though she wasn’t nominated. He convinced jeweler H. Stern to fly up earrings from a private museum in Rio de Janeiro for the actress. … Meanwhile, Harvey Weinstein and his stable of stars, including Leonardo DiCaprio, Johnny Depp and Uma Thurman, expect to be celebrating their Golden Globe wins tonight at the Miramax/Glamour magazine party at Trader Vic’s in Los Angeles.

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