 The second part of Season 2 brings the announcement of the sex of Robyn and Kody 's baby and the Browns ' struggle to adjust to life in Las Vegas . The episodes following the Season 2 hiatus focus largely on Robyn 's pregnancy and the kids ' adjustment to their new lives . The abrupt move to Las Vegas brings about behavioral problems in some of the older kids , which is also discussed largely in the second half of Season 2 . During these episodes the Browns also explore possible businesses that the five of them ( Kody and the sister wives ) can run together . Several episodes after the hiatus discuss specific topics such as jealousy among the sister wives , especially regarding courting a new wife , how the parents combat the influence of Las Vegas on their children , and how the Browns are preparing the older children for college . Mona Riekki is back in this season and is working with the family on finding a permanent home in Vegas . In the finale , Robyn gives birth to baby Solomon on October 27 , 2011 and the possibility of Meri having more children once again <unk> . 
