Joy-Anna Duggar shows off growing baby bump in new Instagram photo with husband Austin Forsyth

Joy-Anna Duggar is showing off her baby bump!

The 20-year-old reality TV star is expecting her first child with Austin Forsyth, and she proudly flaunted her growing bump in a new Instagram post that they shared on their joint account on Saturday.

SEE ALSO: TLC network has shown Jill Duggar's husband the door for good — over tweets

The black-and-white photo showed the couple posing with Joy-Anna's grandfather, who is an Army veteran. The post was shared in honor of Veteran's Day.

"We are so thankful for the men and women who have served to defend our freedom!" it read. "Grateful we got to spend the day with my grandfather who is a Army veteran."

See photos of the couple together:

Duggar announced her pregnancy back in August, three months after marrying Austin in May.

"Austin and I are SO thankful to announce that we are parents!!" she wrote at the time. "Even before we were married we prayed that God would give us children and we are so blessed that he has given us this baby! Jesus is the giver of Life! The baby has arms, legs, fingers, and toes. It has a beating heart and brain waves. The baby responds to touch and is already right- or left-handed. The baby has its own unique fingerprints, which are different from anyone else's."

More from AOL.com:
Scott Disick asks Kourtney Kardashian if they'll get married in their 40s
Fox News should fire Sean Hannity, Media Matters head says: 'Uniquely destructive'
Are Jenny Slate and Chris Evans dating again? All the clues they're back together!