In the season finale, Giuliana and Bill wrestle with the idea of bringing another baby into the world to be Duke's younger sibling. Whereas Giuliana is full steam ahead, Bill is approaching the topic with intense trepidation, especially considering they're still living in Los Angeles--and not in Chicago where he always wanted to raise a family. However, their current location isn't the only holdout. Giuliana's cancer checkup is right around the corner, and it's always a difficult time for her. Plus, the Rancics would want to use Duke's gestational carrier--but they haven't even broached the subject with their doctor or the carrier.