The Kardashians

According to our sources, Lamar was being driven by a car service yesterday in Queens when the car struck a motorcyclist and a 15-year-old boy. Lamar was not injured -- but we're told he was particularly upset by the accident (and even crying afterward) since he was already in town for his cousin's funeral.

We were originally told Khloe was in the car with Lamar, but that was not the case. According to our sources, Khloe is in NYC with Lamar but was not with him at the time.

According to MediaTakeOut.com, which first reported the story, the motorcyclist and the 15-year-old boy were both seriously injured.

Sources close to the couple tell TMZ they've been going over their favorite passages in hopes of picking a few to be engraved on their wedding bands. We're told Kim will pick a passage for Kris' ring, and Kris will pick one to be engraved on Kim's.

According to our sources ... they are each taking it very seriously and they both want to pick something "with meaning."

As we previously reported, Kim already has a bible verse engraved into her massive engagement ring.

Sources close to Kim tell us ... Kardashian worked out a deal with Platinum Motorsports in L.A. ... which will provide enough vehicles to transport Kim's entire family AND Kris Humphries' entire family.

And get this -- Kim is color coordinating the cars to match the rest of the wedding ... and has specified that she only wants white vehicles. We're told Platinum Motorsports has told her it's not a problem.

Of course, the entire party won't be driving themselves -- we're told each car comes with its very own chauffeur.

To end all talk of butt implants or injections, little sis Khloe Kardashian posted a pic of Kim and her electromagnetic badonkadonk on her blog.

Sources close to Kim K tell TMZ ... her lawyers are drafting a defamation lawsuit against Lockett and will file it as early as Monday morning.

Kim has maintained all along she never met Bret -- despite his claims they had a "physical relationship." Harvey hammered Lockett on TMZ Live last week, asking him when and where he met Kim, but Lockett refused to say. Nevertheless, he insisted he and Kim had hooked up this year, after she started dating Kris Humphries.

But on Friday, Lockett finally fessed up on "Showbiz Tonight" ... admitting he never actually met Kim.

We're told Kim's lawyers fired off a letter to Lockett in the last few days, telling him to hang on to the so-called "evidence" he has on his "affair" with Kim -- because he'll need to produce it in court.

What a jerk.

You'll remember ... we tried pressing Bret during TMZ Live earlier this week for details on where he met Kim ... but he

A story is circulating ... London helped facilitate the alleged Lockett/Kardashian hook-up by scoring Bret's number at Kim request. But an attorney for London fired off a letter to In Touch Friday, claiming London has had an impersonator for a while now, and if the mag spoke to anyone claiming to be her ... they were barking up the wrong tree.

The letter goes on to state emphatically that London "has never spoken to anyone at IN TOUCH WEEKLY, does not know Mr. Lockett and did not introduce him to Ms. Kardashian."

Kardashian has fired off a new demand letter to Lockett, obtained by TMZ, which warns him if he doesn't retract his allegations and cease from making fresh ones, his new position will be defendant on the left side of the courtroom.

Lockett went on TMZ Live Wednesday and insisted he did indeed have an online and physical relationship with Kim this year, at the same time she was dating now-fiance Kris Humphries.

In the letter, Kim's lawyer, Michael Kump, says, "To put it very plainly and clearly, and as Mr. Lockett knows, there is not now, and never has been such a relationship," adding, "Ms. Kardashian does not know and has never even met Mr. Lockett."

TMZ has obtained a demand letter, written by Kim's lawyer, threatening "In Touch" that if it ran the cheating story Kim would take legal action. The letter put "In Touch" on notice ... the cheating allegations "are, at a minimum, damaging, defamatory, and an invasion of her privacy."

Kim's reps tell TMZ ... Kim has never even met or spoken with Lockett.

Nevertheless, "In Touch" is publishing the story in its new issue. In the story, Lockett is quoted, saying, "I knew this was a game to her, and this is what she does." Lockett adds, "She pursued me."

Khloe was wearing a black shirt with see-thru material around the sleeves and part of her chest area -- and during the interview, her boob slipped into the see-thru section for all to see.

Nobody on the set seemed to notice -- but tons of viewers did ... and they bombarded Khloe's Twitter account with messages about the nip slip.

Kim Kardashian and her fiancé Kris Humphries are hedging their bets -- they're hammering out a prenup before they tie the knot ... TMZ has learned.

Sources close to the couple tell us … both Kim and her NBA star hubby-to-be are telling friends, “It’s the smart thing to do." And, by the way, they're right.

We’re told the move isn’t one-sided. Both Kim and Kris have tons of loot. Kim is worth a reported $35 mil.

As for Kris ... he's not only making $3.2 mil a year with the Nets, his family also owns a couple of burger joints in Minnesota. Kris' net worth is estimated at $8 million.

The ring -- designed by Lorraine Schwartz -- features a 16.5 carat emerald cut center stone flanked by two 2-carat trapezoids ... for a grand total of 20.5 carats.

We're told the stones are all "the highest clarity and color."

So, we gotta ask ...