Its Hefs big eight-o and the girls have a lot of panning to do, including getting the perfect gift and making sure this party runs as smoothly as possible.

Hef celebrates his 80th birthday with a big celebration with his closest friends and playmates.

The girls shoot their second cover.

Kendra takes the girls and Hef to visit her family in San Diego.

Springtime at the Playboy Mansion.

Before the special Playmate of the Year luncheon, Holly decides to have a slumber party.

Hef takes the girls on an overseas trip to England and France.

Hef and the girls continue their European tour by visiting Italy and Germany.

Back in the U.S., the girls arrange a baby shower for one of the Playboy Playmates.

The girls and some close friends travel to Las Vegas to celebrate Kendra's 21st birthday. In true VIP fashion, they stay in luxury suite in the Palms, and Kendra finally gets an opportunity to show off her blinged-out grill.

It is time for Bridget's favorite holiday Halloween, and the girls celebrate in style.

The girls appear on the Loveline radio show with Dr. Drew, and Holly and Hef celebrate their 5 year anniversary.

The girls interview new candidates for bunny girls to work at the new Playboy Club in Las Vegas.

"Body by Jake" taps the girls to do a workout video and the girls' planning, preparation and performances definitely get their heart rates elevated.

Hef and the girls visit Las Vegas for the grand opening party of a new Playboy Club at the Palms Casino Resort, and the girls sign autographs at the Playboy Store there.