The Sweet Nickname '19 Kids and Counting's' Jill Duggar Dillard Has for Her Unborn Baby

The first-time mother couldn't be more excited about being pregnant.

ByABC News

August 26, 2014, 2:07 PM

Jill Dillard posted this photo to her Instagram on Aug. 17, 2014 with the caption, "Celebrating our "Skypiversary"...one year ago today my husband and I Skyped for the first time! #skype #skypiversary #derickdillard #jillmdillard."
@jillmdillard/Instagram

 -- It's only been a week since Jill and Derick Dillard from "19 Kids and Counting" announced they were expecting their first baby and only two months since they were married in June, but the Dillards already have a nickname for their future little bundle of joy.

"We're expecting!!! So grateful to God for this new little blessing!!! #babydilly #firsttimeparents #sogratefultoGod #derickdillard #jillmdillard," she wrote next to a sweet picture of the couple holding tiny white baby shoes.

Read: '19 Kids and Counting': How the Duggar Family Reacted to Jill Dillard's Pregnancy

So "Baby Dilly" it is!

When the couple announced the good news last week, they added to People magazine that "Both of us want as many kids as God will give us," Jill said.

Jill's father Jim Bob Duggar said everyone was surprised by the news but happy to have another baby running around someday.

"Everyone was clapping and cheering, and we were in shock, too," he said.