Holly Madison and her fellow Playboy gal pals partied it up at TAO in Las Vegas last night, and even though Holly's birthday isn't until December 23, it looks like she's already kicked off the celebrations. Hotties like Jayde Nicole and Bridget Marquardt also showed up, so be sure to click the gallery below for more silicone sexiness!

Holly Madison spent her fourth of July roasting at the Wet Republic pool at the MGM Grand in Las Vegas, and though her inked up boy toy Benji Madden was nowhere in sight, we did spot her getting cuddly with some other unidentified dude! Click the gallery below to see...

Last night we snapped Jayde Nicole, Holly Madison and a handful of other surgically enhanced Playmates leaving Katsuya, and the ladies may not be natural beauties, but they're certainly not that hard on the eyes...

They still haven't confirmed they're an item, but after all the time they've spent together lately, do we really believe that Benji Madden and Holly Madison are just "adventure buddies"?!

Benjolly were first spotted together last December, and since then they have hung out in Las Vegas and Los Angeles, and over the past few weeks Hugh Hefner's former number one lady has dropped all sorts of hints on Twitter that there's something romantic brewing between the two of them. This morning we snapped the duo going for a stroll on Melrose, and even though Holly's rep insists the two are "just friends," it looks like there was some sort of a cinco de sleepover last night!

He certainly moves fast!

ITW reports that Benji Madden is already planning on moving in with his blonde bombshell girlfriend, Holly Madison!

“Benji cares very much for Holly. They have been talking about living together,” a source says of the short-time couple.

Holly's currently starring in the Peepshow in Vegas but will make the move back out to Cali soon. In fact, she was here with her beau just last week, making a cameo in an IT BOYS! (the band Benji discovered) music video. “Benji kept telling her how amazing she looked. They couldn’t keep their eyes off each other,” a spy on set says.

Well you can't argue that Benji Madden certainly has a type!

True, she's only at the airport in Burbank, but Vic Beckham wouldn't approve! Hugh Hefner's former ladylove Holly Madison arrived back in town yesterday and kept her curves covered up.

And don't forget to smile, girl! Even though Kendra has her own show now and you don't.

photos courtesy Steve Spatafore/Startraksphoto

Kim Kardashian sure love a delicious weiner!

Last night Kim Kardashian, Holly Madison and Mel B. attended the grand opening of Pink's hot dogs at Planet Hollywood in Las Vegas, and the ladies clearly had a fabulous time hanging out with each other and scarfing down some franks. People line up around the block for a taste of Pink's in LA, so we're guessing they'll do just fine in Sin City.

And Holly stopped by the Sugar Factory at the Mirage on Saturday. How does these girls stay so skinny eating like this?!