The mama-to-be -- who announced that she was avec child in August and is already in her second trimester -- has already decided on this precious princess' moniker.
"Little Harper Delaney due February 18th #soinlove," the vivacious Texan captioned the Instagram sonogram snapshot above featuring her teeny-tiny daughter. Would you look at that MTV munchkin?
And, ever the planner, Madison is also preparing for her mini-me's impending arrival with some important purchases:
Offer your well wishes to Tadison on their daughter on the way in the comments!