She’s in the final stretch!

Pregnant Sister Wives star Maddie Brown is nearing her due date and now she's only about three weeks away! She took to Instagram to share an exciting baby bump update with her fans — and she posed for a little impromptu photo shoot while enjoying a day out with her husband Caleb Brush.

“Baby Brush is getting big!” the 21-year-old captioned the set of photos, and she revealed that she is currently 37 weeks along.

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Fans rushed to leave comments of love and support to the adorable couple. “You still look absolutely amazing! Such a beautiful mama-in-waiting,” one fan wrote and other fans noticed that her belly has dropped — which means Maddie is one step closer to welcoming her first child with her 30-year-old hubby.

Maddie and Caleb tied the knot last June in an adorable, bohemian-themed wedding — and just five months after their nuptials, the couple announced that they were expecting. Last month, they celebrated the upcoming arrival of their baby boy with a woodland-themed baby shower — complete with lots of rustic décor like wooden signs and deer cut-outs, which was definitely something that matched soon-to-be daddy Caleb’s taste.

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I am so in love with you! 😍😍💙💙

A post shared by Maddie Brush (@madison_rose11) on

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“Now that we’re having a son, I’m excited to take him out hunting, fishing — just kind of do the same things that I love doing myself,” he told TLC.

Caleb and Maddie’s love story played out on her family’s hit TLC series Sister Wives and even though Maddie is one of 18 children in the polygamous Brown family, baby boy Brush will be the first grandchild. Since their family is untraditional — Maddie’s father Kody is married four women, including her mother Janelle — she mused over what her child will call her dad’s other wives Meri, Christine, Robyn.

“We think it would be super cute to have different names for all the grandmas, like oma, grams or babicka,” Maddie told People. “Grandma said differently or in different languages. Ultimately they get to choose what they are called but my dad [Kody] will probably be grandpa.”