Sister Wives stars Kody and Robyn Brown are seeing pink.

According to People, the polygamist reality stars are expecting a daughter. Robyn is set to give birth on Jan. 7, as previously reported.

"The whole family is so excited for our new baby girl," Robyn told People. "So many of them guessed ahead of time it was a girl."

This is Kody and Robyn’s second child together, and it is the 18th child for the Brown family. Kody, who is married to four different women, has one child with Meri; six each with Janelle and Christine; and legally adopted Robyn’s three children from a previous marriage.

Robyn gave birth to her son, Solomon, with Kody in 2011. The pair recently got legally married to allow the adoption to proceed. Kody had to divorce Meri to marry Robyn and allow the family to “legally restructure.”

Robyn and her family are excited to have another addition in the ever-growing family.

"She kicks constantly and responds well to all the attention she gets through my belly," Robyn said. "We can't wait until she gets here!"

Sister Wives airs Sunday on TLC.