The Duggars celebrate Jana and John David's 28th birthday with a family ski trip. Meanwhile, Jinger & Jeremy tour a birth center and find out the gender of their baby. Later, Lauren goes shopping for the perfect wedding gown. Will she find "the one?"

Three couples go on a thrift store date night and choose outfits for their partners to wear. With a small budget and a big sense of humor, will someone end up with a fashion faux pas? Then new mom Joy and pregnant Kendra have a joint Sip & See party.

The three pregnant sisters are reunited for a big family birthday. Later, Joy goes into labor and after 20 hours, she is transported to the hospital for an emergency C-section. How will Joy and Austin handle this scary change of plans?

Jinger and Jeremy's good friends come for a visit, and the expecting couple has a trial run at parenthood. Will they be able to manage three kids under five without any meltdowns? Later, Josiah travels to Georgia to propose to Lauren. Will she say yes?

Jinger & Jeremy celebrate their first anniversary, and Jeremy has a very special surprise for her. Josiah is ready to take the next step; will Lauren's dad give his blessing? Later, Joe & Kendra reveal the gender of their baby in an explosive way.

Jessa and Ben visit a creamery with the kids. Joy and Austin go on a babymoon before their baby arrives. Jinger and Jeremy are in Arkansas and have a special announcement for the family.

Newly-expectant parents Joe & Kendra check up on their baby. The little girls record an album in Nashville. Josiah takes Lauren's siblings out for ice cream. While visiting Jeremy's parents at a charity gala, he & Jinger reveal some unexpected news.

Joy and Austin check in on Baby Forsyth at their midwife appointment. In Laredo, Jinger and Jeremy go window shopping for a new piano. Joe and Kendra move into their new home and have a special reveal for the family.

In this first look at Josiah Duggar and Lauren Swanson's wedding, the bride and groom say "I do" and have their first kiss. Then, wind back 6 months earlier to the start of their courtship. Meanwhile, Joe and Kendra spend their honeymoon in Greece.