TLC's "Sister Wives" stars Robyn Brown and Kody Brown have announced that they are expecting baby number two.

"We are so happy to announce an eagerly expected new member of the Brown family!" they told PEOPLE. 

Robyn is the fourth wife of Kody, the polygamous family's patriarch. She is already a mother to three children from a previous marriage, and the couple share one child together, three-year-old Solomon. Kody has one child with his first wife (Meri), six children with his second wife (Janelle) and six children with his third wife (Christine), Entertainment Tonight reported.

The news comes four months after Kody made the controversial decision to divorce Meri (Kody's first wife of 24 years) so that he could marry Robyn and legally adopt her three children, Us Weekly reported. The emotional divorce was chronicled on the family's controversial TLC series 'Sister Wives'.

A soon-to-be father of 18, Kody is prepared to draw his past experiences with his wives' prenancies to be supportive for Robyn.

"I try to always be kind and tender, but when a woman is expecting, you have to be ultra-sensitive," he told People. "And always do the dishes."

Watch the clip below from the "Sister Wives" reunion special, where the family discusses the emotional process of Kody and Meri's recent divorce.

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