'Sister Wives' Star Robyn Brown Gives Birth to Girl [PHOTO]: Kody Now Father of 18 Kids

Sister Wives star Robyn Brown and husband Kody Brown welcomed their second child together, a baby girl Sunday night. The 9 lbs., 9 oz baby was born at home, and is the 18th child for Kody, whose polygamist family is featured on the TLC series.

The couple used a midwife, and Robyn's parents were on hand to support her during the home birth.

The 46-year-old advertising salesman also has a 3-year-old son, Solomon, with Robyn, 37.

Robyn told People magazine they had not yet decided on a name for the little girl.

"We are just getting to know her now and waiting until she whispers it in our ear," she said.

Robyn added: "Baby Sister is already opening her eyes and seems to love listening to all the voices of her big family talk around her. It was such a beautiful moment when the family was all gathered together to meet our newest sweet addition!"

Kody is father to 19-year-old daughter Mariah with Meri and six children with Janelle: Logan, 21; Madison, 19; Hunter, 18; Garrison, 17; Gabriel, 15; and Savanah, 10. He has six kids with Christine: Aspyn, 20; Mykelti, 19; Paedon, 16; Gwendlyn, 13; Ysabel, 12; and Truely, 5.

Robyn also has three children from a previous marriage:  Dayton,15, Aurora, 13, and Breanna, 9.

Kody's first wife, Meri, divorced him in September of 2014 so he could legally marry Robyn and adopt her children.

The TLC reality show Sister Wives has been on the air since 2010, documenting the life of the polygamous family.