'Sister Wives' Star Maddie Brown Brush and Husband Caleb Expecting Second Child: 'Over the Moon'

Sister Wives' Maddie Brown Brush and husband Caleb's baby is due in August, they share with PEOPLE exclusively

Another Brush baby is on the way!

Sister Wives star Maddie Brown Brush and husband Caleb are expecting their second child together, they confirm to PEOPLE exclusively. Their baby is due in August.

“I am really excited,” Maddie, 23, tells PEOPLE. “This pregnancy feels less real for some reason, but I am still over the moon! I have no idea what I think it is. I’ll just be happy with a healthy baby.”

The couple, who wed in June 2016, are already parents to 20-month-old son Axel James.

Sister Wives Maddie Brown pregnancy CR: Karl F Mullings
Karl F Mullings

“I think he’ll be a little jealous at first,” Maddie tells PEOPLE of their little boy. “Our world revolves around him right now and that’s changing just a touch.”

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“He’ll have to share, which he’s good at, but I’m not sure about everything,” she adds. “I think once he warms up he will be really happy to have another sibling.”

For Caleb, fatherhood has been a dream come true.

“For as long as I can remember, all I wanted was to be a dad,” he tells PEOPLE. “Now I will be a dad to not one, but two. I’m just excited to give Axel a sibling and grow our family! I think it’s going to be a boy.”

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As Maddie and Caleb prepare to welcome their new arrival, another baby isn’t the only big change in their lives. The couple is moving from Las Vegas to Greenville, North Carolina, where Caleb got a new job.

“We are ecstatic about this new chapter,” Maddie tells PEOPLE. “Sad to leave family, but excited to see what is in store for us on this next adventure!”

Sister Wives airs Sundays on TLC at 8 p.m. EST/7 p.m. CST.

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