“We never decide on our babies’ names until the last possible moment after they’re born, just before we leave the hospital. But we, for some reason, had started to call this little guy in my belly Jack,” she told her followers at the time.
Article source: https://www.huffingtonpost.co.uk/entry/chrissy-teigen-ivf-fertility-john-legend_uk_62121b61e4b0f2c343f59a68