Sister Wives couple Maddie Brown and Caleb Brush have revealed whether they are expecting a baby girl or boy.

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"We are both super excited for our little boy," the newlyweds told Us Weekly of their first child together. "Although we had a good hunch that it was a boy, it's nice to finally know, so we can start preparing!"

Brown, 21, and Brush first shared the big news with 30 loved ones at a gender reveal party held at Christine Brown's Las Vegas home on Monday.

The partygoers reportedly played a game in which they had to cut out mustaches or hair bows from paper and wear the accessories. Everyone was also given blue and pink balloons to blow up, but only the blue ones could inflate.

Brown -- the daughter of Sister Wives stars Kody Brown and his second wife Janelle Brown -- first announced the pregnancy on November 21 by posting a sweet Instagram photo of Brush kissing his wife's baby bump.

"So happy to announce our little addition!!" Brown captioned the picture, later adding that the parents-to-be are "over the moon."

Brown and Brush got married in June 2016 in Bozeman, Montana, according to Us. They exchanged vows during an intimate outdoor ceremony with the whole family present.

Brown gushed about how happy she's been in the marriage just last month, captioning a photo of themselves at Yellowstone National Park, "Six months being married to you has been more than a fairy tale come true. You truly are my best friend and soul mate! I look forward to the years to come!"

The Brown family has one thing after the next to celebrate, as the expectant mother's sister, Mykelti Brown, just married Tony Padron in December of last year.

Sister Wives currently airs on Sunday nights at 8PM ET/PT on TLC.
About The Author: Elizabeth Kwiatkowski
Elizabeth Kwiatkowski is Associate Editor of Reality TV World and has been covering the reality TV genre for more than a decade.