Joy-Anna Duggar’s parents seem to be shocked by how fast their daughter grew up.

Jim Bob and Michelle Duggar posted a tribute to Joy on the family’s Facebook fan page over the weekend in celebration of their ninth child’s 20th birthday. In it, they stated they “can’t believe” that Joy is about to welcome her first baby with husband Austin Forsyth.

“We can’t believe you are all grown up married and having your own baby!” the couple started off the post, which included shots of Joy throughout the years. “You have always lived out your name, by bringing Joy to everyone you meet.”

The couple continued by stating their love for her and Austin and said they are “excited” to see what’s in store for their future together.

“May God pour out His blessings on your lives as you continue to love and follow Jesus and make a difference in the lives of those around you! We bless the day you were born and look forward to all the beauty of life we will share with you in the future! We love you.”

Austin also posted to social media in honor of Joy’s birthday. On their shared Instagram account, he shared several never-before-seen photos of Joy and accompanied them with a touching caption.

“Happy birthday to the love of my life! Besides my salvation, you have been the best thing that has happened in my life!” he wrote. “From being my spiritual encourager, working partner, hunting buddy, and everything in between you complete me in so many ways! I am always amazed at how much integrity and character you display in our day to day lives! I love you with all my heart!”

Joy and Austin wed in front of TLC viewers on the family’s reality series “Counting On” in June. In August, the pair announced they were expecting their first child of an undetermined gender due in early 2018. The baby will be Jim Bob and Michelle’s tenth grandchild.

It’s unknown at this time whether Joy and Austin’s baby news will be shared on “Counting On.” The season finale that aired earlier this month ignored Joy’s pregnancy, despite showing off her bump on-screen.

As of late, TLC has not renewed the series for another season.