Photo Credit: Erik Kabik/RETNA

The infamous Simpson family rolled in to WET Republic at MGM to celebrate Ashlee Simpson-Wentz’ 25^th birthday. Her entourage included sister Jessica Simpson, dad Joe Simpson, mom Tina Simpson, husband Pete Wentz and a few close friends. The Melrose Place star arrived in style wearing a black romper, fedora and of course leopard wedges from her big sister’s self-titled shoe line, whereas Jessica opted to wear a sheer black cover-up and black heels.

While on the red carpet, Ashlee dished about the stunning Chanel shoes Pete gave her for her birthday and gushed about how lucky she is to have such a wonderful family, husband and son.

Photo Credit: Erik Kabik/RETNA

Photo Credit: Erik Kabik/RETNA

Credit: Ethan Miller/Getty Images

Jon Gosselin of “Jon and Kate Plus 8″ continued to indulge in his new bachelor lifestyle at WET REPUBLIC as he spent Saturday afternoon partying poolside. The controversial father arrived at the Las Vegas hotspot with mom Pamela Gosselin Castello and an entourage of his best guy friends. Rumored current girlfriend Hailey Glassman was no where in sight.

On the red carpet, Jon shared his excitement to be in Las Vegas and mentioned he will be meeting with Christian Audigier at MAGIC on Monday. He also discussed his sextuplets first day of pre-school this week, sharing that they were overjoyed with their first experience on a school bus.

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Despite his recent personal tribulations, the reality TV star was in good spirits all day, taking photos with fans and conversing with admirers. Jon spent most of the afternoon in one of the exclusive VIP bungalows, relaxing on the daybed to watch TV and stretching out in front of the private dipping pool to take in the surroundings of the jam-packed venue. It was no surprise that Jon was the center of attention as numerous bikini-clad ladies flocked to the area for their chance to share a moment with the bachelor.

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Photo Credit: Denise Truscello/Wireimage

WET REPUBLIC welcomed Kourtney and Khloe Kardashian to celebrate the launch of their new E! reality show, Kourtney and Khloe Take Miami. Khloe sported a sexy plum maxi dress, while Kourtney opted for a more casual look by wearing jean shorts and a loose fitting studded top, which concealed her tiny baby bump. Although five months pregnant, Kourtney still looked petite and was hardly showing. The soon-to-be mom was sans the father of her baby, on-again, off-again boyfriend Scott Disick. Although he was spotted partying at WET REPUBLIC the day before, Disick was a no-show for Kourtney’s poolside appearance Sunday.

Rather than letting loose “Vegas” style, the reality starlets spent the day relaxing in one of WET REPUBLIC’s exclusive bungalows. Khloe along with close friend Malika Haqq indulged in the party atmosphere and hung out by one of the private pools as many admirers vied for the attention of the younger Kardashian sister. Meanwhile, Kourtney spent most of the afternoon laying low in the bungalow, shying away from the crowd and was seen texting non-stop for the majority of her stay at the Vegas pool party destination. The socialites ordered fruit platters, virgin Miami Vices, champagne for Khloe and water for Kourtney.

Kourtney and Khloe Take Miami is to premiere on E!, tonight.

Photo Credit: Jill Ann Gifford/Star Traks

WET REPUBLIC – the ultra pool at MGM Grand welcomed Carmen Electra as she celebrated her birthday and hosted the launch of Daylife Sundays – the Vegas party pool’s weekly industry event. Carmen walked the carpet in a sexy blue summer dress paired with gold aviator sunglasses. The seductress had her fiance Rob Patterson of KORN in tow, who also rocked the turntables as a guest DJ. While Patterson manned the decks he gave his girl a personal shout out, addressing the crowd to wish Carmen a “Happy Birthday! From me to you.. I love you!”

Photo Credit: Jill Ann Gifford/Star Traks

Photo Credit: Jill Ann Gifford/Star Traks

WET REPUBLIC at MGM Grand welcomed Lauren Conrad as she hosted the 2009 grand opening of this season’s ultimate pool party scene.

Photo Credit: Erik Kabik/RETNA