Bill and Jen discuss their children and the meaning of their smiles.

Jen meets with a physical therapist about improving her muscle strength and mobility.

To celebrate her 40th birthday Jen thinks the family is going to Galveston for a beach vacation , but Bill has a big surprise planned for his unsuspecting wife.

Bill talks about being a working Dad and how it's changed his life. He also talks about the obligation associated with adopting children.

Jen takes her mom and daughter with her to the spa for a pedicure before the vow ceremony.

Will has been able to feed an elephant and a giraffe in the past few months. Bill remembers the time they met the elephant in Mumbai.

Bill takes Jen to a secret place in the hotel to propose for the second time. She said yes!

Bill and Jen show off their silly side, but also they talk about the moment they met and fell in love.

Bill hangs Will's growth chart in his room and Will tries to be a good helper, but as a four year old boy, he is easily distracted.

When it comes to cutting the cake Jen takes the lead in directing the procedure. Watch The Little Couple Tuesday's 10/9c.

Jen talks about telling Will and Zoey that Mommy is sick with cancer. Will understood that Mom was not feeling well, but might not understand what cancer really means.

The Klein family enjoys a fun ride on the carousel.

It's Easter and while Jen is doing rounds at the Hospital, Bill is at home teaching Will and Zoey the art of dyeing Eggs.

Bill gives an open and honest answer to his feelings about Jen being diagnosed with cancer.

Watch the moment that Jen found out from her doctor that she has beat cancer. Her heavy treatment paid off and her prognosis is excellent.

Life in "The Little Couple" household has changed dramatically since returning from India with second child, Zoey.

As Michael and Judy work together to decorate Bill and Jen's house, Michael starts to drive Judy crazy.

Jen shows off her unique bowling technique during a match with her parents and Bill.

As Bill & Jen plan on growing their family, the couple sees the need to give back to the community.

You'll never believe Bill & Jen's answer when asked whether they would choose to be average-sized people, if given the choice...

Will Rocky ever forgive Bill & Jen for dressing him up as Santa Claus?

Jen cleans out her closet and gathers old outfits for charity.

Bill and Jen's time with Bill's nephew Riley shows Jen is a natural with babies. Bill, on the other hand...

The Little Couple reveal their custom built home and how grateful they are to feel comfortable in the one place they want to call home.

Jen and Bill take the first steps to adopting a special needs child.

Some time has passed since The Little Couple received news of their surrogate Cindy's miscarriage. Now, Bill and Jen are ready to move forward, determined to make their family dreams a reality, but will their surrogate feel the same way?

Sneak peek from season 5 as Bill Klein & Jen Arnold continue their exciting life together in the return of TLC's The Little Couple - premiering Tuesday, March 20th at 10PM ET/PT.

In tonight’s season finale, Bill & Jen arrange a visit from Martha, the founder of a website called Rainbow Kids, an organization dedicated to finding parents for kids with special needs, including dwarfism. The couple doesn’t know that Martha ha ...

Bill and Jen discuss some of the risks and medical issues the pregnancy might entail with the potential surrogate family.

Jen and Cindy pass by the lab where their embryos live. Jen lets us in on why she's named them.

Bill gets a little practice holding a baby with Baby Riley.

Another step in their journey for parenthood: FBI clearance.