Kendra Wilkinson, Holly Madison party at Las Vegas pool

By Melissa Arseniuk

Friday, May 22, 2009 | 6 p.m.

Kendra Wilkinson has a big month ahead of her: Her new reality show will debut on June 4 and she’s getting married two weeks later.

Despite all that is on her plate, the 23-year-old was anything but stressed Friday afternoon as she and fiancé Hank Baskett kicked off their Memorial Day Weekend at Wet Republic.

Wilkinson’s former “Girls Next Door” co-star, “Dancing with the Stars” alum and future “Peepshow” star, Holly Madison, also joined her at the pool.

The blondes sizzled in strikingly similar beachwear: both wore pink and white bikinis and Dior sunglasses to the pool party.

While Madison, who led a record-setting bikini parade down Las Vegas Boulevard last week, showed off her beach-ready (and “Peepshow”-ready) bod in a bikini, Wilkinson covered up with a green caftan as her entourage made its way to their VIP cabana just after 3:30 p.m.

Meanwhile, Wilkinson and Madison’s other former co-star, Bridget Marquardt, was nowhere to be seen. While she was in town to celebrate Hefner’s 83rd birthday last month, the final member of the former Hefter trifecta did not return to Las Vegas this weekend. Instead, Marquardt was in Cancun, busy filming her new Travel Channel series, “Bridget’s Sexiest Beaches.”

Wilkinson said she hadn’t seen or spoken to her in a while, but that doesn’t mean the two are on bad terms.

“Last I heard she was planning my wedding shower,” Wilkinson laughed.

Wilkinson did a lot of laughing this afternoon as she and Baskett chatted with reporters.

The two were all smiles as they talked about the exciting month ahead.

She said crews have all but wrapped filming for the first season of her new reality series, “Kendra.” All that’s left to film, she said, is what will be an hour-long episode that will be filmed during her and Baskett’s June 20th nuptials.

The “Kendra” special will be a full circle of sorts for Wilkinson: it will be filmed at the Playboy Mansion, which is the site of her former reality series, residence and romance.

While there was a time some might have expected Wilkinson to walk down the aisle with a very different individual – former boyfriend Hugh Hefner – she and the Playboy mogul will do their aisle-walking before any vows are exchanged.

Hefner, 83, is expected to give his former live-in girlfriend away on her wedding day.

Wilkinson has previously said there’s no animosity between her former and current flames and that Baskett and Hefner are good friends.

Instead, she said she and Baskett are simply excited for their big day.

“We just want to say our I-do’s,” she said.

With less than a month to go before they become man and wife, Wilkinson and Baskett will enjoy a big Memorial Day Weekend in Las Vegas.

The pair plans to stay close to the MGM Grand, for the most part.

After today’s pool party they will have what Wilkinson has dubbed “a special date night” at “Top Chef” judge Tom Colicchio’s restaurant, Craftsteak. They also have plans to catch a performance of Cirque du Soleil’s “KÀ,” during their stay and, if they’re lucky, tomorrow night’s UFC fight, as well.