Snooki and JWoww try to salvage their relationships before it's too late. The Jersey Shore roommates help celebrate JWoww and Roger's engagement.

Snooki helps JWOWW prep for her daughter's arrival while Jionni warns Roger about the delivery. A worried Jenni goes into labor and quickly changes her tune on getting an epidural.

Roger plays some pranks on Jenni prior to his proposal.

The BFFs become neighbors, have nanny try-outs, and the boys head off to Daddy Boot Camp.

The girls try to relax with pre-natal yoga while Jionni is tormented by Lorenzo's "terrible twos". Snooki throws JWoww a surprise baby shower and serves up some disturbing cakes.

Snooki and Jionni try to get their relationship back on track, and JWOWW considers introducing Roger to her mother.

Snooki and Jenni enjoy a girls night out while Jionni and Roger have a "Dadchelor" party.

Snooki and Jionni are desperate to move into their new house before their daughter is born. JWoww and Janis throw Snooki a surprise sprinkle party right before Snooki goes into labor.

Snooki ends up going into early labor. JWoww is embarrassed after her father tries to makes a pass at her friends at a family barbecue.

Jenni and Roger head up north to visit Roger's family in Maine. Snooki and Jionni are putting their new baby knowledge to the test as they adjust to life as new parents.

JWoww & Roger have a christening for Meilani. It's the big day for Snooki as she walks down the aisle and marries Jionni. As they celebrate how far they have come, the girls look back on their many adventures together.

Things get crazy for Snooki and Jionni when they travel to Miami for their bachelor and bachelorette parties. It's the last hurrahs for the soon-to-be Mr. and Mrs. Lavalle!

Snooki and Jenni have a girls weekend in Atlantic City, N.J.; the guys are left to watch Lorenzo, but Jionni gets Janis to babysit so they can play paintball.

Snooki feels like the romance is dying between her and Jionni and Roger gets upset at JWOWW for being irresponsible.

The honeymoon is over! The aftermath of Girl's night out brings both couples to the verge of breaking up.

Snooki & JWOWW are back to making memories with an all new season. Snooki & Jionni decide it's time to get their own place, while JWOWW & Roger consider couples' therapy to solve their relationship issues.

Snooki and Jenni shop for a wedding dress; Jenni realizes she may want to get married.

Jenni's dogs take their final exam; Snooki receives the results of her DNA test; the Joeys come over for a drag party.

JWoww and Roger try to work through their problems as new parents. Snooki and Jionni have a garden war. JWoww throws Snooki a high tea bridal luncheon with the Joeys. Snooki has a fashion runway with her bridesmaids.

JWOWW gets a mommy makeover and takes her family camping. Snooki and Jionni start decorating their house but can't move in until the house is finished.

Snooki searches for a babysitter for Lorenzo; Jenni and Roger take Snooki and Jionni to the haunted Pennhurst Asylum.

Snooki and Jenni have a couples' weekend with their "Jersey Shore" roommates.

Exhaustion takes its toll on new parents JWOWW and Roger. Snooki turns into a bridezilla while planning her Gatsby-themed bridal shower.

Snooki shows off her wedding gown to JWoww. Jionni's parents visit town while new parenthood starts to cause problems for JWOWW and Roger.

JWoww and Roger get used to life as new parents. Snooki and Jionni plan an elaborate welcome home party for Meilani complete with a mariachi band.