Congratulations are in order for Allison Holker and Stephen "tWitch" Boss!

On Sunday, March 27, the happy couple welcomed their first child together — a baby boy named Maddox Laurel Boss.

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WE ARE HAVING A BABY @sir_twitch_alot !!!!!!!!

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"[Maddox's birth] was truly an unforgettable moment and we are grateful to everyone that shared in the experience and made it so monumental. Our family feels full," the pro dancers told E! News. "Maddox already has the best big sister, Weslie — they have already bonded and share a truly beautiful love."

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Weslie, 7, is the 28-year-old Dancing with the Stars pro's daughter from a previous relationship. She first announced her pregnancy on the ABC series alongside her family members in October.

Allison and the So You Think You Can Dance star, 33, tied the knot in 2013.

We are so excited for the growing family!