The Girls Next Door

- Season 6

(2009)

Hef's three new girlfriends -- Crystal and twins Karissa and Kristina -- are introduced, and the twins go to Las Vegas to promote their appearance in Playboy magazine.

Hef, Crystal, and others go to Las Vegas to have dinner with Holly and see her star in the production "Peepshow."

The girls hold a roller disco party at the Mansion, which provides them with the opportunity to meet Barbi Benton.

The girls and their friends go camping in the backyard of the Mansion.

Crystal becomes a Playmate, and the twins learn to pole dance for their roles in a Sofia Coppola movie.

Hef takes the girls to Italy, where the twins meet their cousins and Hef is an honored guest at the Sanremo music festival.

The girls model in a charity fashion show organized by Bridget and then run their own lemonade stand to raise money for charity.

After Crystal takes singing lessons, she decides to record a song written by her late father as a gift to her mom.

Bridget hosts a baby shower for Kendra.

The girls make a scrapbook for Hef to celebrate their one-year anniversary.

Aspiring Playmate Claire Sinclair is introduced to life at the Bunny House, and Hope Dworaczyk is honored in Las Vegas as the 2010 Playmate of the Year.