Deena, 32, shared a cute pic of her and Nicole, 31, inside her car.
"Love you poopie," Nicole wrote in the comments section.
They commonly referred to themselves as "meatballs" on Jersey Shore due to how short they are.
Deena entered the world of motherhood when she welcomed her first child, a son named CJ, on Saturday, January 5.
It's baby number one for Deena and her husband Chris Buckner.
Nicole, on the other hand, is expecting her third child with husband Jionni Lavalle.
The business owner made the pregnancy announcement on Thanksgiving Day 2018.