And speaking of the DeBoer children, how does Chelsea's first mini-me feel about the upcoming addition to the clan?
"Aubree's excited!" Chelsea, who will soon be tied with Kailyn Lowry for being mom to the most munchkins on the long-running series, revealed to MTV News. "She knew we wanted one more, so it wasn’t a huge surprise."
But Aubree's siblings don't quite get all of the excitement in the DeBoer household about the petite princess.
“They will both say there's a baby in my tummy, but I don't think they understand what that means at all," Chelsea explained about Watson, three, and Layne, who's almost two.
Be sure to stay with MTV News for all Baby DeBoer updates -- and catch Chelsea, Cole, Aubree, Watson and Layne on the brand-new season of Teen Mom 2 premiering on Tuesday at 8/7c (watch a preview below!)