'Sister Wives' Star Robyn Brown Reveals Newborn Daughter's Name

Find out the newborn's unique name!

Sister Wives
stars Robyn and Kody Brown have finally revealed the name of their daughter.

The newborn was given the unique moniker, Ariella Mae, TLC confirmed to ET.

WATCH: Sister Wives Star Robyn Brown Welcomes Baby Girl

Their little girl, born at 10:10 p.m. on Jan. 10 in the couple's Las Vegas home, weighed in a 9 lb., 9 oz. and measured 21.5 inches long. The new bundle of joy makes Kody, 46, the father of 18 children with his four wives -- Robyn, 37, Christine, 43, Meri, 44, and Janelle, 46.

Robyn and Kody were legally married in 2014, after the Brown patriarch divorced his first wife, Meri. They also share a 3-year-old son, Solomon. Kody is "spiritually married" to his three other wives.

WATCH: Sister Wives Family Has Been 'Legally Restructured'

In an announcement, TLC shared that "Ariella received special visits from each of the sister wives who are all overjoyed and bursting with love for the newest Brown family addition."

Find out what Robyn said about her new bundle of joy in the video below.