Episode 1
The sixth season begins with Hef's new girlfriends Crystal Harris and twins Karissa and Kristina Shannon. The sisters travel to Las Vegas to celebrate their double Playmate issue.
Episode 2
Hef and Crystal go to Las Vegas to join the twins. Later, they go to see Holly in a live show.
Episode 3
Crystal, Karissa and Kristina get into trouble on a Hollywood tour bus and fear they may be arrested.
Episode 4
The twins and Crystal camp in the backyard at the mansion with some friends, but end up in Hef's room to watch a movie.
Episode 5
Karissa and Kristina prepare for roles as sexy twins in Sofia Coppola's movie "Somewhere." Meanwhile, Crystal learns she will be a Playmate and poses for her photo shoot.
Episode 6
Hef attends a music festival in Italy and takes the twins and Crystal along to share the fun.
Episode 7
Bridget Marquardt hosts a fashion show to benefit an animal charity and gets Crystal and the twins to help out.
Episode 8
A film shoot for a video game takes place at the mansion. Also: Crystal takes singing lessons.
Episode 9
Holly, Bridget, Crystal and the twins throw a baby shower for Kendra.
Episode 10
Hef and Crystal celebrate their first anniversary of being together.
Episode 11
