Rapunzel lets down her hair on the red carpet! Holly's Hollyween in Vegas!

Holly

Holly and Josh

Donald "The Cowboy"Cerrone

Las Vegas’ sexiest ghouls and goblins came out to Studio 54 at MGM Grand Hotel & Casino last night as Holly Madison hosted her 3rd Annual Hollyween, complete with a sexiest costume competition and special performance by PEEPSHOW and E!’s ”Holly’s World” castmate Josh Strickland. The hotel buzzed with excitement as costumed party-goers headed to the illustrious nightclub for the notorious Halloween celebration. Before arriving to the Vegas hot spot, Madison tweeted, “Can't wait to see all the creative costumes in the sexiest costume contest at Studio 54 tonight! Costume contests are so entertaining!”

Spooky and sexy revelers swarmed the red carpet hoping to catch a glimpse of what the starlet donned as her costume for the evening. The crowd cheered as the Vegas princess arrived on the red carpet as Rapunzel, complete with the fairytale icon’s long blonde braid. Madison looked stunning in a short, purple, shoulder-bearing dress and nude pumps as she carried a little stuffed Pascal, the chameleon from Disney’s “Tangled.” Castmate and friend Josh Strickland joined the blonde beauty on the carpet as a sexy vampire in black leather pants and long cape. The pair posed playfully on the carpet for photographers as Strickland pretended to bite Madison’s neck in true vampire fashion.

The duo made their way inside to their VIP table overlooking the iconic nightspot, which was transformed into a gothic mausoleum with gigantic chandeliers and DJ Loczi’s DJ booth enveloped in a large coffin surrounded by LED screens and raised high above the dance floor. Loczi pumped up the crowd saying, “Holly Madison is in the building everybody,” as the bombshell hung her long Rapunzel hair over the balcony and waved to fans below. Madison and Strickland danced to classics, like “I Love Rock ‘n’ Roll” and Journey’s “Don’t Stop Believin’,” and took turns playfully kissing Madison’s stuffed Pascal.

Before the costume contest, Strickland took the stage and performed his hit single, “Report to the Floor.” Fans cheered as the vamp moved to the beat with his four sexy backup dancers. At the end of his performance, Strickland welcomed Madison to the stage. The crowd went wild and ecstatically snapped pictures as the host descended to the stage from an aerial swing!

Contestants nervously lined up backstage for a chance to win $10,000 in the sexiest costume contest. Madison introduced each contestant and the audience screamed for their favorite barely-there costumes, crowning a superhero duo as the winner. Jay and Anh Campbell as sexy Captain America and Wonder Woman took home the coveted cash prize and never broke character as they posed for photos. After wishing the costumed crowd an appropriate “Happy Hollyween,” Rapunzel returned upstairs to soak up the nightclub’s atmosphere with Strickland for the rest of the night.

Across the casino floor at Tabú Ultra Lounge, TapouT fighter Donald "The Cowboy" Cerrone celebrated his UFC 137 win over Dennis Siver. Hardly recognizable without his usual cowboy hat, the MMA fighter was festive and fun, dressed as a pirate.

Cerrone was good spirits as he smiled on the red carpet and waved to fans. Inside the venue he was joined by a small entourage in a private VIP area overlooking the energized dance floor. He partied with his friends to the beats of  DJ Kidd Jay, reveling in his victory into the early morning hours.