Jill Duggar celebrated her marriage and pregnancy with husband Derick Dillard over the weekend.

The 23-year-old "19 Kids & Counting" star spent quality time with the future father and her family ahead of her impending due date. Duggar is now nearly 40 weeks pregnant, and Dillard shared a new photo of his wife's enormous baby bump on Instagram.

"Happy 9 monthiversary @jillmdillard !!! A LOT has happened since June 21!" he captioned the picture. "I am blessed beyond measure and every day is even better with you baby! You're my best friend, and I love you with all my heart! #newlyweds #newdad."

Duggar's brother-in-law, Ben Seewald, also took to the photo sharing site to post a snapshot of Duggar and Dillard at dinner Sunday, writing, "[Wife] Jessa [Duggar] and I are over at Jill and Derick's with some of the fam sharing a meal together! #fellowship."

Duggar and Dillard married in June 2014, and announced they are expecting in August. The couple celebrated at a baby shower in February, and again at a second fete in March. Healthy human babies are typically born at 39 or 40 weeks, making Duggar due by the end of the month.

Duggar and her family came to fame on TLC's "19 Kids & Counting," which returned for a 10th season last month. The program follows Jim Bob and Michelle Duggar and their 19 children, whose ages range from 5 to 26, and airs Tuesdays at 9 p.m. ET.