Welcome to paradise! The series kicks off as you get to know Hef's three girlfriends, Holly, Bridget and Kendra, and how life works at the world's most famous Mansion. Who would want to leave this place?

When two aspiring Playmates arrive at the Mansion to stay the night before they shoot test pictorials, Hef's girls greet them with varying degrees of hospitality. Hef makes a surprise announcement to Holly, Bridget and Kendra.

When you're one of Hef's girls, your birthday party isn't just a quaint gathering, it's an event. Kendra's 20th is a two-day celebration, which starts off with a trip to the 2005 Playboy Jazz Festival with the gang and her gorgeous pal Destiny.

This week brings another birthday bash, but this one is for Playmate Carmella DeCesare. It's Vegas, baby and the girls help Sin City live up to its name.

Put up your dukes, it's Fight Night at the Mansion! There's a whole lotta action inside and outside of the the ring when Hef's former girlfriend, legendary Playboy cover girl Barbi Benton pays a visit.

The girls spend their Fourth of July preparing gift boxes for United States soldiers.

Take a picture. It'll last longer! That's exactly what happens on this episode when the girls fulfill lifelong dreams and pose for a sexy Playboy pictorial.

"Lingerie or less," that's the dress code for Playboy's Midsummer Night's Dream, the annual hedonistic ritual that has become one of L.A.'s most anticipated summer events. To prepare for the massive soiree, the girls endure a gauntlet of hair and makeup appointments, bikini waxes and tanning sessions.

There's plenty of hot stuff going on this week when the girls slip between the sheets for another sizzling photo shoot. Holly decides to renovate the guesthouse, and girls finally get to see themselves on the cover of the November issue of Playboy.

It's Halloween at the Playboy Mansion! While Holly and Kendra put their wits together to decorate tombstones, Bridget sets out on a full-scale ghost hunt and contacts a paranormal investigator to get to the bottom of the Mansion's long-running history of spirits.

It's road-trip time as the girls head to Bridget's hometown of Lodi, California. After hitting the road super early, they hang with Bridget's family and friends, and enter a grape-stomping competition.

The girls take a bite of the Big Apple when they travel to Manhattan with Hef as part of the promotional tour for Holly, Bridget and Kendra's November cover of Playboy. The group travels to the East Coast in style, but the good times are interrupted by nerves, as the girls are set to appear on The View.

Hef, Holly, Bridget and Kendra blow into the Windy City, Hef's birthplace and home of Playboy Enterprises, Inc., to continue promoting the November issue of Playboy. They take in a visit to Playboy HQ, dine at trendy eatery Japonais and more!

Whodunit? That's the big question at Bridget's murder-mystery-themed birthday party. But before the big celebration, Holly gets a smashing driving lesson in Hef's beloved 1959 Mercedes, and Kendra shows off her drive on the tennis court for a charity tennis tournament.

The girls return to Las Vegas, with Hef this time, for two very important occasions: to promote the new Playboy Club at the Palms Hotel & Casino and to preview designer Roberto Cavalli's sexy "bunny couture".

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 think about their next career goals.

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.

The girls prepare for Christmas, arranging for there to be snow at the mansion.

Holly celebrates her birthday by throwing a party fit for a queen and a king. While Kendra struggles to find an old fashioned party dress for the Marie Antoinette-themed party, Mr. Hefner surprises his main squeeze with a golf cart detailed by Bridget. On the big night, Hollys friends gather at the Mansion for food and fun wearing sexy period costumes.

After helping to decorate a Star Wars themed float for the world famous Tournament of Roses Parade the girls decide to get to work on their New Year's resolutions.

It\'s Holly\'s big chance to serve as apprentice editor under the tutelage of Playboy\'s west coast editor, Marilyn Grabowski.

Holly gives direction to Kendra and Bridget on solo photo shoots for their 2008 calendar.

The girlfriends head to Vail, Colorado to snowboard with Olympic gold-medalist Shaun White. Holly and Bridget practice their moves on the bunny slope while Kendra works on getting that rail.

Valentine\'s week at the Mansion starts with a round of dominoes, gift baskets full of Playboy merchandise and dinner for Hef, the girlfriends and a few Playmates at Trader Vic\'s. The Mardi Gras party provides a perfect end to the week: Bridget\'s costume wows her friends; Holly proves that less of a costume is more; and Kendra hooks her brother up at his first Playboy party.

The eagerness to learn who will become the next Playmate of the Year has the Mansion buzzing as the girls get to know the finalists.

The girls spend some quality time with those other important people in their life: their families.

It\'s an opportunity for Holly to reprise her role as apprentice as she works on a second Playboy pictorial, this time with some of the Bunnies from the Playboy Club in Las Vegas.

Bridget sends her dog to obedience school; Kendra enrolls herself in charm school; Holly continues her photo-editor apprenticeship for Playboy.

Kendra drives a race car. Bridget gets special rims for her Porsche. Holly shops for a Prius.

Hef and the Girls visit the world-famous Renaissance Fair in custom-tailored period attire. Hef is regal, Holly is a princess, and Bridget and Kendra are naughty wenches.

The Playmate of the Year Luncheon is always one of the biggest events of the year at the Mansion. But this year, it's even bigger.

It's Independence Day at the mansion! Hef, Holly, Bridget, Kendra and the rest of the staff celebrate, while Bridget and her sister anticipate the arrival of their older brother home from Iraq.

Holly decides to re-decorate the gym but her and Hef have a clash on personal styles and Kendra prepares for her mother's plastic surgery.

Holly takes Bridget and Kendra to Alaska, to visit where she grew up.

Hef spices up this year's Midsummer Night's Dream Party with an Arabian theme. Meanwhile, Kendra's mom undergoes plastic surgery for a younger look, which is unveiled at the big party.

Mary hosts a ladies night, while Hef hangs out with "the guys" at the mansion.

Hef and the girls attend the Monte Carlo International Television Festival when invited by Prince Albert. On the way they stop in a Paris and Saint Tropez to celebrate Kendra's birthday. While exploring the sites in Monaco, Kendra and Bridget get into a bit of trouble.

Kendra consults a pet psychic, while Bridget takes Wednesday to get an agent.

Holly reviews four candidates for Playmate who come to the mansion to be photographed.

The girls leave Hef at the mansion and take a trip down to Jamacia for Holly's sisters wedding.

Holly's wedding is attended by her sisters in Jamaica. A day of fun finds the girls taking the island by storm, or will it be the other way around?

For Bridget's birthday she decides to hold a murder mystery at the mansion with a 20's theme.

The Girls hit the beach, and bring a party with them! Pro surfer Kelly Slater stops by with surfing tips, and Holly makes a splash of her own by taking some much needed swimming lessons from gold-medalist swimmer Amanda Beard.

A look at Hef and the girls as the 2008 motion picture "The House Bunny" is filmed, which is about life around the Playboy mansion.

It's Hugh Hefner's 82nd birthday and he takes the ladies to Las Vegas to celebrate.

Hef and all the Girls attend one of Playboy's most action-packed, celebrity-studded parties of the year: the over-the-top Super Bowl extravaganza!

Bridget becomes a producer for a low-budget Halloween flick.

Before the arrival of the new girls, Bridget and Holly revamp the Mapleton house, and then throw a house warming party.

Hef's search for the 55th anniversary Playmate of the Year is part of his plan when he hosts a party.

The search continues for the 55th Anniversary Playmate, with Holly and friends making their way to The Big Apple.

Hef and the Girls attend the Kentucky Derby at Churchill Downs, with the Girls decked out in their most fabulous dresses and hats and turning heads.

The 55th Anniversary finalists are surprised by a special announcement from Hef

Hugh Hefner picks the winner of the 55th anniversary Playmate for Playboy magazine.

Kendra and Holly head to the batting cages after she arranges a Playmate softball game.

Hef recalls his long, lucky life as he scans through old scrapbooks, while the girls work on the 2009 Girl Next Door calendar.

Hef and the ladies head to Aspen, Colorado, to meet former Playmate/girlfriend Barbie Benton at her home where they all join in for a sleigh ride.

Bridget's little sister, Anastasia, is finally turning 21, and the Girls want to help her celebrate in style.

Bridget's friend Stacy Burke gets married in Las Vegas.

Bridget's horror movie is shooting - and she's learning quite a bit about this sometimes "scary" business. What's the status of this particular film? And Kendra’s car is stolen, so she goes out hunting for a new set of wheels!

The girls treat their moms to a spa day at the mansion

The girls go to New Orleans for Mardi Gras.

The girls get certified in diving though a class in the dining room, their first lesson in the mansion pool and a sea dive off the coast of Catalina

The girls get certified in diving though a class in the dining room, their first lesson in the mansion pool and a sea dive off the coast of Catalina

Kendra decides to move out of the Playboy Mansion and goes house shopping. Bridget takes a leave of absence from The Girls Next Door to film her new show covering different beaches around the world.

Kendra decides to move out of the Playboy Mansion and goes house shopping. Bridget takes a leave of absence from The Girls Next Door to film her new show covering different beaches around the world.

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.

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

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

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.

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.

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

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

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

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

Hef and Crystal celebrate their first anniversary of being together.