Kristin Cavallari: Charitable Liquid Bikini Babe pose

Showing off her glam figure, Kristin Cavallari was the center of attention at the Aria Resort & Casino at CityCenter in Las Vegas, Nevada on Saturday.
The "Hills" hottie donned a sexy black bikini with a sheer black top as she posed for pictures at the Liquid Pool Lounge - where she happened to be the weekend host.

Audrina Bows Out of VMAs

A bit peculiar just happened, bar absolutely not something odd. Source tells me that Audrina Patridge has disregarded her trip to New York and will no longer be presenting at the VMAs.

I'm told MTV wanted her and Kristin Cavallari to present together, but both said no thanks.

It's been a busy week for Audrina, and the cancellation may be related to her recent alleged stalker problems.

While there were some whispers that Kristin would now present with the cast of Audrina's new horror movie Sorority Row, I've been assured that is not happening.

Audrina's rep hasn't replied to a request for comment, but stay tuned for more details.

Has Mayer Found His Next invasion?

John Mayer is a infamous ladies man, but not just any old beautiful woman will do for the guitarist. No, he has to have the very famous ones. (Or at least semi-famous.) And now he reportedly has another one to add to his list.

According to Janet Charlton, Mayer's latest is 'Hills' star Kristin Cavallari. Charlton reports that the two have been "friends with benefits" for some time, but are now about to go public.

Mayer's most recent high profile relationship was with A-lister Jennifer Aniston. He's also been linked to Minka Kelly, Jessica Simpson, Cameron Diaz and Jennifer Love Hewitt, among others.