1 - Meet the New Girls

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.

2 - Look Before You Peep

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

3 - The Wheel World

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

4 - The S'more The Merrier

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.

5 - Uncover Girl

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.

6 - Ciao Time

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

7 - Charity Begins at Holmby

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

8 - Stay Tuned

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

9 - The Showering Inferno

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

10 - Deja View

Hef and Crystal celebrate their first anniversary of being together.

11 - The Bunny House