Holly Madison barely covered up in a bright red bikini as she celebrated the Fourth of July in Las Vegas. The Holly's World star spent the day with her reality costars Josh Strickland and Angel Porrino hosting a pool party at WET REPUBLIC, Breaking Celebrity News.com has learned.

"I love doing Holly's World and I love doing Peepshow here in Las Vegas," Holly says. "I'm writing a book about Las Vegas as well."

Since moving to Sin City after her days as one of the Girls Next Door, Holly has become a diehard city booster. She regularly attends charity fundraisers and even caught the UFC title bout the night before.