Parents

Another Duggar grandchild on the way! Jill and Derick Dillard are expecting

Just weeks after Jim Bob and Michelle Duggar made headlines by welcoming the 20th child to their family comes the news that the former reality TV parents are about to become grandparents again!

Their daughter, Jill Dillard, is pregnant with her second child.

"We were really excited when we found out we're expecting," Jill announced in a clip filmed for TLC. "I had been through tons of pregnancy tests."

That's a detail husband Derick was quick to confirm.

"She bought a whole big bag online," he said, joking that it was a "buy one, get 100 free" deal.

RELATED: Jill and Jessa Duggar share adorable photos, videos of sons Israel and Spurgeon

Now that they have no doubts about it, they couldn't be happier — for themselves and for their 20-month-old son, Israel.

Happy Easter....one day late! Jesus is alive! :-) #dillardfamily www.dillardfamily.com

A photo posted by Jill Dillard (@jillmdillard) on

"Israel is going to be a great big brother," Jill said with confidence. "He already loves other little babies."

Derick felt just as certain, saying their son will be "fantastic" in his new role.

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"We've already told him that the baby is right here," he said, gesturing to Jill's bump, "It might throw him off with his vocabulary, because he thought that was the stomach before. Now we point and say 'baby.' But he gets it, and he'll be really excited to be a big brother, I'm sure. We just look forward to growing as a family."

And another part of the family is growing, too.

👈🏽1st • 2nd 👉🏽 #31Weeks #BabySeewald2

A photo posted by Jessa Seewald (@jessaseewald) on

Jill's little sister, Jessa Seewald, is set to welcome her second child in February.

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