Credit: Bryant Livingston/TLC

Talk about a full house.

Sister Wives' Kody Brown and his fourth wife Robyn welcomed a son named Solomon Wednesday, Us Weekly confirms. This is the 17th child for the fundamentalist Mormon family.

Kody, 43, has 13 children with wives Meri (his only legal wife), Janelle and Christine, ranging in age from 1 to 17. Robyn, 31, has three children from a previous marriage.

The family moved from their home in Utah to Las Vegas, Nevada last year after police launched an investigation into their polygamist lifestyle. In July, Brown filed a lawsuit challenging the polygamy law in Utah.