Hugh Hefner's teenage girlfriends are installing stripper poles in their bedroom.

Twins Kristina and Karissa Shannon, 19, do not share sleeping quarters with the 83-year-old Playboy mogul - he stays with his number-one girlfriend, 23-year-old Crystal Harris - but are still thrilled with the space they have at the Playboy Mansion.

Bridget Marquardt is installing a "vintage" trapeze in her hallway. The former "Girls Next Door" beauty - who split from Playboy mogul Hugh Hefner last year - loves using the unusual exercise equipment to stay in shape, and has decided to make it into a feature at her new home.

She explained: "Trapeze is a great workout. It got me in the best shape in my life. The one I'm putting in my house is vintage style - with velvet on the ropes and shiny silver balls on the ends."

Simon Cowell partied with lingerie-clad models at the infamous Playboy mansion on Saturday night. The TV mogul attended magazine founder Hugh Hefner's annual Midsummer Night's Dream party, held at the 83-year-old's Los Angeles home.

Jon Voight, Shaquille O'Neal, Jack Osbourne, James Van Der Beek, Ryan Seacrest, Randy Jackson, Shannon Elizabeth, Jon Lovitz and Hefner's former girlfriend Bridget Marquardt also attended the bash.

Kendra Wilkinson and Hank Baskett got married on Saturday. The former "Girls Next Door" star wore a white dress with a "tight bodice and poofy skirt" and platinum jewelry worth over $100,000 as she walked down an aisle made of white rose petals in the garden of Los Angeles' infamous Playboy mansion at sunset.

Hank and his groomsmen also wore white, while the 24-year-old star's bridesmaids - including Bridget Marquardt and Holly Madison, who lived with Kendra when they all dated Hugh Hefner - wore lavender.