It's Jim Bob's birthday and he is ready to celebrate! But before the party can start Michelle gives him a special gift, a trip to the allergist complete with several rounds of allergy injections.

It's a full house when the Duggars visit their friends, the Bates! Watch as the two large families combine their 38 kids and counting for some fellowship and fun. And the Bates' oldest son, Zach makes a very special announcement.

The Duggars are under water - in an aquarium that is! The Duggars continue their visit in Atlanta, Georgia with their first ever trip to an aquarium. Later, the family meets professional surfer and shark attack survivor Bethany Hamilton.

The Duggars are in Atlanta for a little work and a lot of play. After attending a speaking engagement, it's time for some fun in the water, jet skiing, tubing and wake boarding. But happiness turns to worry when one Duggar has a terrifying accident.

When the worst snowstorm in Arkansas history hits the Duggars' hometown, the family is engulfed in a real winter wonderland. Watch as they weather the winter-weather with sledding, making snow cream and lending a hand to their neighbors in need.

It's time to check in with Josh, Anna, and the first GrandDuggar, Mackynzie. The couple packs up baby for her first trip to visit Anna's family in Florida. They also make a special stop to reminisce about how they started their family.

The Duggar family is no stranger to welcoming a new baby to the family. But when complications arise, Jim Bob and Michelle meet baby nineteen, Josie, earlier than expected. Watch as the family welcomes Josie with a Duggar-sized amount of hope and love.

Watch as the large family visits one of the largest waterfalls in North America -- Niagara Falls. But with Duggars' proneness to motion sickness ever present, will they enjoy their maiden voyage or will they rock the boat with seasickness?

Watch as this family of 21 comes together to clean up some of Jim Bob's rental properties. But the Duggars are not all work and no play, as they show when the family celebrates Joseph's 16th birthday.

Michelle and Jim Bob visit the obstetrician for another routine ultrasound checkup of their baby, only to receive devastating news that there had been a miscarriage.

The Duggars go to Space Camp. The family tests their strengths and skills by doing astronaut training activities such as a multi-axis trainer and flight simulator.

Mackynzie gets her first haircut. Josh and Anna provide updates on their car lot and their son Michael.

Good Morning America's Dan Harris visits the Duggars for a day and has the quintessential Duggar experience. And the day gets busier for the Duggars when the older girls host a dating seminar. Meanwhile, Michelle is concerned when Josie becomes sick.

The Duggars are in El Salvador! In this continuation of their trip, the Duggars visit two orphanages to bring aid and presents. Watch as Jim Bob struggles with the Spanish language in an episode that make you laugh and cry.

She said yes! Following the most unusual proposal ever seen on TV, there's only one way to end this story, with a most unusual wedding! Watch as the oldest of 18 children, Josh Duggar, prepares to tie the knot with his fiancé Anna Keller.

The first Duggar grandson is having a full day of firsts: baby Michael has his very first checkup—complete with his very first shot, meets his cousin Amy for the very first time, and is a guest at his very first Duggar birthday party.

The Duggars are back! Watch as the family adds new life, planting trees, visits a cornmaze, and hits the speaking circuit. Later, an emotional moment occurs when Michelle and Jim Bob go in for a routine pregnancy check-up.

It's no secret that the Duggar and Bates families find sanctuary in each other's company! But they take it a step further when the two families visit a parrot sanctuary in Pigeon Forge, Tennessee.

The Bates clan, a fellow mega-family from Tennessee (Gil, Kelly and their 16 children, with another on the way), decide to pay the Duggars a visit to their new Arkansas home. The episode centers around the logistical challenges of nearly 40 people in one house, as well as the similarities and differences between the two families.

It's Christmas with the Duggars! Watch as the Duggars celebrate one of their favorite holidays. Join them as they decorate and ride on a float in the Christmas parade, Duggar style. Will they take first place in the competition?

This episode features the Duggars rules about dating and courtship and includes a hidden camera view of oldest son Josh popping the big question to his fiancee Anna on her 20th birthday.

The Duggars explain their ways of thriftiness -- they do not use credit cards, only debit cards or cash; they purchase clothing from second hand stores, groceries from Aldi, grow their own vegetables, use firewood (from trees on their property) to heat their home and even have a recipe to make their own laundry detergent.

The Duggars take a trip to Ohio for Michelle's family reunion. On the way, the family visits the Creation Museum in Petersburg, Kentucky where animatronic dinosaurs roam the earth with Adam and Eve. Prior to the trip Michelle goes in for an ultrasound, whereby the family learns that baby #18 is a girl.

Jinger successfully passes her driving test. The Duggars also celebrate Michelle's birthday and discuss their upcoming book.

The family prepares for the arrival of the newest Duggar, Jordyn-Grace Makiya who will be delivered by Caesarean.

Josh and Anna plan for their upcoming wedding.

Jim Bob and Michelle Duggar leave the kids at home for a trip to San Francisco to celebrate 25 years of marriage (not to mention 18 children!) But what exactly will the Duggar children do while mom and dad honor their silver anniversary?

Think a house with 20 people is a zoo? What about a safari? Watch as Jim Bob and the Duggar children make friends with the animals while volunteering at the Wild Wilderness Safari. Lions, tigers, and...Duggars! Oh my!

The Duggars don't mind getting dirty in the name of fun and family! Watch as they go to Crater of Diamonds State Park to play in the dirt while digging up diamonds. Will the family strike diamonds or just cubic zirconia?

The Duggars are on the road again - or should we say in the air! This time the Duggars take a trip to El Salvador for sun, jungle, and service.

She's ready for her close up! Jordyn-Grace Makiya Duggar comes home to join her brothers and sisters just in time for a photo shoot! People magazine takes a special interest in the Duggars and gathers them all for an upcoming issue.

The Duggars continue to share their new bundle of joy, Jordyn-Grace. This time, Jim Bob, Michelle, Jessa, Jinger, and Jordyn head to New York City to be guests on The View.

The Duggars are on ice! Watch as Michelle, Jim Bob, and the kids experience the worst ice storm Arkansas has ever seen.

It's a big family cleanup when the Bates arrive after the ice storm to lend the Duggars a helping hand. It shouldn't take the two unusually large families long to get the Duggars back up and running.

Even mundane things like decorating and visiting the dentist become adventures when 18 kids are involved. In this episode the Duggars install new blinds in their home and find out a few of the kids have cavities! But for the Duggars, how many is a few?

Even though the Duggars are home schooled, they know the importance of a good education. Watch as Michelle and some of the kids visit a neighborhood public school and find out how they run their own school at home.

It's a challenge for any family to take a road trip but what about when that family has 18 kids? Watch as the Duggars embark on a trip to the ATI Homeschool Conference in Big Sandy, Texas.

You're invited to a birthday party! Watch as the family throws Jason a Duggar style birthday bash at a roller-skating rink. With 17 brothers and sisters, how many presents will he get?