Air date: 2009-10-11

Runtime: min

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.

Air date: 2009-10-18

Runtime: min

Hef and Crystal go to Las Vegas to join the twins. Later, they go to see Holly in a live show.

Air date: 2009-10-25

Runtime: min

Crystal, Karissa and Kristina get into trouble on a Hollywood tour bus and fear they may be arrested.

Air date: 2009-11-01

Runtime: min

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.

Air date: 2009-11-08

Runtime: min

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.

Air date: 2009-11-15

Runtime: min

Hef attends a music festival in Italy and takes the twins and Crystal along to share the fun.

Air date: 2009-11-22

Runtime: min

Bridget Marquardt hosts a fashion show to benefit an animal charity and gets Crystal and the twins to help out.

Air date: 2009-11-29

Runtime: min

A film shoot for a video game takes place at the mansion. Also: Crystal takes singing lessons.

Air date: 2009-12-06

Runtime: min

Holly, Bridget, Crystal and the twins throw a baby shower for Kendra.

Air date: 2009-12-06

Runtime: min

Hef and Crystal celebrate their first anniversary of being together.

Air date: 2010-08-08

Runtime: min