Snooki and Jenni decide to have one last celebration before their lives become too serious.

A fight erupts over a bachelor party when Jionni and Roger come over.

Snooki gets an ultrasound of her fetus. She and JWoww also decorate their home.

Snooki and Jenni invite their ``Jersey Shore'' roommates over for dinner.

The former roommates razz Snooki for being pregnant and engaged.

Snooki gets jealous when JWoww makes a new friend at a cooking class; Snooki volunteers at a doggie day care; JWoww and Roger's relationship hits a rough patch.

The ladies head to Cancun to party it up and enjoy some time in the sun. Snooki finds herself unable to let loose while pregnant, leading to a late night fight in a club.

The girls' friendship is tested on their last night in Cancun. Later, JWoww and Roger's relationship hits another rough patch, while Snooki starts to question her engagement to Jionni.

Snooki and Jionni get into an argument on his birthday over a picture on Twitter. Meanwhile, JWoww and Roger consider the future of their relationship.

The ladies get a taste of motherhood when they care for two pretend babies. Later, Snooki finds out if she's having a boy or a girl.

The girls swap boyfriends for a night. Later, they must decide if they are going to stay in Jersey City or move home with their boyfriends.