Greece's biggest shipping families have banded together to make sure their sons don't even think about marrying Paris Hilton.

"Letters have been exchanged between them," a knowledgeable society source tells us. "It's fine that they dated her, but they don't want her in their families."

Though she's with a po' boy at the moment - T-shirt designer Tyler Atkins - Hilton seems to favor Greek boys whose billionaire families specialize in big tankers ceaselessly crisscrossing the ocean, filled with oil.

She's had a long on-again, off-again with Stavros Niarchos, was briefly engaged to Paris Latsis and dated Chris Contogouris. She stayed at currently platonic pal Niarchos' place in Hawaii just after getting out of the hoosegow, which had to make his parents nervous.

They don't care that Hilton makes her own millions; the "Simple Life" star stands to earn even more if producer Christine Peters casts her in "Fashionista" with Lindsay Lohan.

Hilton, 26, is also likely to inherit part of the estate of grandfather William Barron Hilton, who just sold Hilton Hotels to Steve Schwarzman's Blackstone Group for $20 billion. Though a source notes, "[Her father] Rick is one of eight children, and they all have children."

But it's not about the money - it's about class, which the Greek families take very seriously. X-rated videos and jail time haven't helped Hilton's image as completely vacuous and self-absorbed.

Stavros, 22, is the son of Philip Niarchos and Victoria Guinness - daughter of the legendary socialite Gloria Guinness and Franz-Egon, Count von Furstenberg. He's the namesake of Stavros Niarchos, who invented the supertanker and was married to royalty, as well as to Charlotte Ford and Aristotle Onassis' first wife.

Latsis, 28, is the son of socialite Marianna Latsis, whose own parents were scandalized when she was briefly married to his father, water-skiing instructor Gregory Katsidokostas. Marianna reportedly refused to meet Hilton during her son's five-month engagement to her in 2005.

A spokesman for Latsis could not be reached. But a friend of the Niarchos family told us: "[Stavros] is a big boy. They don't need to talk to him, because he can handle himself. Yes, everybody knows she's trouble. But he doesn't need his family to tell him who to date."

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Are Usher and Tameka Foster ready to make it legal? The buzz is that the two, who are expecting a baby this fall, may wed as soon as this weekend. An insider says they're personally calling friends like Jay-Z and Beyoncé and Janet Jackson and Jermaine Dupri to attend the nuptials, which could take place at music honcho L.A. Reid's Hamptons spread. Big question: is Usher's mom, Jonetta Patton, invited? Sources say Patton, who's also Usher's ex-manager and isn't on the best of terms with Tameka, may be traveling this week.

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Kelly Clarkson must've just wised up to the adage, "The music business is fast and ugly - like your mama." Yesterday, she blogged apologies for dissing Clive Davis, the head of her label BMG/RCA, after she'd said, "You're 80; you're not supposed to like my album." Duh. Davis then promptly snubbed Clarkson on this spring's "American Idol" finale when he plugged records by fellow Idolites Taylor Hicks and Katharine McPhee but not Clarkson's, which has sold a hefty 463,500 copies. Then again, Hannah Montana's (aka Miley Cyrus ) sold 642,000. Yesterday, a backtracking Clarkson said: "I'm well aware that Clive is one of the great record men of all time. He has been a key adviser and has been an important force in my success to date."

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John Mayer was in high spirits at his Borgata show Sunday night - despite having lost $64,000 the night before, we hear. The crooner told the audience it was the best show of his summer tour and joked throughout his set. Saturday night, Mayer was up about $20,000 at the blackjack tables before finishing deep in the hole, says our spy, who adds: "He's got a very unorthodox way of playing. He stands when he should hit, and he hits when he should stand. It's enough to make a seasoned player leave the tables!"

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Domestic life agrees with oh-so-on-again couple Danny Masterson and Bijou Phillips. The two sprang for a $3 million Los Angeles villa last month, and on Saturday in the Hamptons, the lovebirds stayed out until 4:30 a.m. after Stereo by the Shore's 10 Cane Rum dinner in Southampton to fete pal Wilmer Valderrama 's Calavana clothing line. "They were kissing and holding hands," says our spy. "Danny was even playing with her hair."

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There were tears in Texas last week after Hilary Duff was accosted by some young fans. A spy says Duff, her sister Haylie and their parents were enjoying a quiet dinner in low-key Richmond last Wednesday.

But when word got out that the famous singer was at Pier 36 Seafood and Oyster bar, two 9-year-old girls arrived carrying posters and T-shirts and hoping for autographs.

"On their way out, the owner asked if Hilary would sign a menu for her daughter and she did," says an insider.

But when the youngsters approached, the source says, "[Hilary] said, 'I don't really get to spend a lot of time with my family; sorry' and walked out the door.

"She made one of the little girls cry."

Aww!

Hilary Duff was traveling yesterday and could not be contacted.

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AT least N.Y Giants star Michael Strahan, who has a big divorce settlement to pay his ex-wife Jean, doesn't have to spend a lot on girlfriend Nicole Murphy, who is well-provided for by her ex, Eddie Murphy. Shopping Sunday at the Barneys Co-op store in Chelsea, Strahan shelled out about $700 for a few pairs of Prada shoes while his paramour purchased dresses and tops with $1,400 of her own cash. Shop employees also told The Post's John Mazor the pair definitely looked like a couple.

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Kim Kardashian just loves to get naked for the cameras. The voluptuous daughter of O.J. Simpson lawyer Robert Kardashian recently stripped down for Playboy. "The photos have been already shot. I don't know if they show everything," a source tells us. Presumably, the snaps won't show as much as the notorious sex tape Kardashian made with rapper Ray J. Meanwhile, Kim was partying Saturday with Denise Richards at the Playboy Mansion at a benefit for the Nicole Brown Foundation.

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Sizzling “Transformers” hottie MEGAN FOX boasts: “I have ‘Brian’ on my stomach!” – meaning she’s tattooed fiance BRIAN AUSTIN GREEN’s name barely north of her tummy’s southern border – but at age 21, the barely-legal star probably hasn’t considered how the “Beverly Hills, 90210” hunk’s moniker will look all expanded if she gets pregnant.

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Salespeople at a Seattle boutique snapped to attention when they suddenly recognized that a woman shopper wearing a wide-brimmed hat pulled low over her eyes was…EEEK!... convicted shoplifter WINONA RYDER! Watching Winona cruise the aisles and select a bunch of items, a nervous salesbabe finally intercepted the star and asked: “Would you like me to put these in a dressing room for you?” Apparently sensing the suspicious vibes, innocent Winona stammered: “Oh…no, I really don’t have the time…I’m actually running late for another appointment.” Shoving the clothes at the clerk, she high-tailed out of the shop in a fl ash!


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Exactly how sweet is KIM “Hardball” CATTRALL’s newlyinked “Sex and the City” movie deal? After repeatedly refusing to sign on the dotted line since the TV series ended in 2004, Cattrall stubbornly held out and won what seemed like her impossible dream when producers fi nally caved and gave her (1) equal salary, (2) equal billing and (3) the same onscreen time as star SARAH JESSICA PARKER! Kick-*** Kim even negotiated an “equal perks” rider – insisting on a top-of-the-line dressing trailer identical to Sarah Jessica’s, plus an exclusive dream team of hair and makeup artists!

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Pregnant “Simple Life” star NICOLE RICHIE and a galpal waltzed into a Malibu pet store to ogle adorable puppies and kitties – but the pungent animal stink turned Nicole green! Quickly sitting to clear her woozy head, mommy-to-be took a deep breath…and started to gag just as a quick-thinking salesgirl plopped a trash can in front of her and… HURRRLLLL! As pet-browsers gaped, embarrassed Nicole quickly fished out a tissue, cleaned herself off and scampered for the exit.