Brittny Gastineau is showing off her sexy body in the pages of Esquire Latin America.

The former reality show star-turned-jewelry designer was at one time BFFs with Kim Kardashian, but since Kim's divorce, a source close to Ms. Gastineau tells us the two ladies are no longer on speaking terms.

What gives? Immediately after Kim split with Kris, Britt told us, "Kim will be fine. Everyone just needs to back off and let them enjoy their time together as newlyweds. Magazines are always looking for drama. That's how they sell magazines."

Sounds like she had Kim's back to us! Gastineau, who is the creator of Tres Glam jewelry, is currently the girlfriend of Latin superstar Luis Miguel ... Mariah Carey's ex.

After seeing these provocative pics of Brittny, it's no wonder Luis is singing her praises!

Brittny Gastineau was spotted leaving her birthday party at Sur in WeHo last night, and the starlet looked like she had a blast celebrating with her family and close friends. Britt rocked a super sexy black tunic and tights, and even though she forgot a bra, she looked a-m-a-z-i-n-g!

The birthday girl blew us a kiss on the way out, and speaking of lips, look who else showed up:

Kim Kardashian and Kris Humphries' marriage has been under fire lately with numerous magazines claiming the two are already headed for a split. However, Kim K's longtime BFF Brittny Gastineau is speaking out in support of the reality star and her basketball hubby.

Brittny tells X17online exclusively:

"Kim will be fine. Everyone just needs to back off and let them enjoy their time together as newlyweds. Magazines are always looking for drama. That's how they sell magazines."

The Tres Glam designer recently joined Kim for a girls' day out at the nail salon. When we asked if Kim and Kris were happy, find out what Brittny had to say in the video below.

Spotted: Brittny Gastineau leaving BOA Steakhouse with a mystery man amid rumors that she is pregnant with Michael Phelps' baby. Though the reality star recently went on a date with Phelps in LA, she insists that she's still single. "I'm too busy to date anyone because I'm working so hard on my jewelry line," she tells People.

It was reported that she was spotted purchasing a home pregnancy test last week, and when asked her if she is eating for two, Gastineau responded, "No. Do I look like it?!" Well, no, but that's not the best answer to give missy!

You cant' get it right all the time ...

One of our photographers (who obviously doesn't Tivo every single episode of The Hills like I do) mistook the beautiful Brittny Gastineau for Audrina Patridge the other day at The Grove.

I mean, they both have dark hair? ... Roll tape ...

Last night Brittny Gastineau celebrated her birthday at Beso (and later at Crown Bar) and everyone from Lindsay Lohan to Kim Kardashian showed up to partake in the festivities.

Getting dolled up with your famous gal pals and hitting up some oh Hollywood's hottest spots? Sounds like a bomb birthday bash to us! But what happened inside the party that made Lindsay cry? We're dying to know!

It's so hard to keep up with Kim Kardashian! In addition to being a very important business woman, she spent Saturday getting the full treatment at the salon before heading out to get her shop on with pal Brittny Gastineau at one of our fave boutiques.

She may not be married (yet) or preggers (yet), so why not enjoy the unencumbered life of a single (ish) lady while she can?

And I'm not just talking about her animal print shirt! Look closely and you'll see something that isn't part of the pattern on her blouse!

Last night Brittny Gastineau grabbed some grub at Jerry's Deli with LaLa Vasquez, and even though she wore a blazer and jeans, this outfit was anything but conservative!