Carrie Underwood and her family celebrated a quiet Christmas at home on Tuesday night (Dec. 25), and she turned to social media to share an adorable picture of her three-year-old son, Isaiah, resting his sweet little head on her pregnant belly.

"I’m thanking the Lord tonight for His Son while I cuddle with mine," Underwood writes via Instagram. "Watching Christmas movies with him while he uses my big belly as a pillow. Sweet ending to another great Christmas. Merry Christmas to all of you, from my family to yours!"

Baby Underwood Is Here!

Underwood is right around the corner from delivering her second child with her husband, former Nashville Predators player Mike Fisher, which she has revealed is another boy.

The superstar announced her second pregnancy on Aug. 8, the same morning she announced the dates for her upcoming 2019 Cry Pretty Tour 360, which launches in May of 2019.

Relive Carrie Underwood's Best Baby Bump Pictures:

She'll be finished with maternity leave in time for the tour launch, and a source recently told People the couple were "cherishing" their final Christmas with Isaiah as a family of three.

The "Love Wins" singer spent part of the year getting ready to move, and in October, just days before she co-hosted the 2018 CMA Awards, Fisher shared a picture to social media of a moving truck backed up in the driveway of the family's new house. They apparently moved to Leiper's Fork, a rural suburb 40 minutes west of Nashville that is home to a number of country singers and country music movers and shakers.

“Carrie is on lockdown until the baby [is born],” the source told People. “They’re fully moved into the Leiper’s Fork house and have the hospital route mapped out.”

Underwood's pregnancy has been causing her insomnia, and on Friday (Dec. 21), she tweeted out of frustration at 4:29AM, writing, "Dear pregnancy insomnia, Please go bother someone else...like dads. Go bother dads. My husband sleeps so soundly and peacefully and I’ve been awake for 2 hours (so far). How is this fair? Imma lose my mind!"

Later that morning after (hopefully) catching some sleep, she returned to write, "Worst part about insomnia = waking up this morning to see what I bought online while I was up. I just realized I spent over $600 on make up."

Watch: What to Expect Now That Carrie Underwood Is Expecting

It's Been Another Big Year for Country Babies! Check It Out!