Kristine Casey, from Chicago, was a gestational carrier for her daughter, Sara Connell, and her husband Bill, who suffered heartbreaking infertility struggles. She successfully delivered their son Finnean in February last year.
Now, the family's unconventional journey has been told in Mrs Connell's new memoir, Bringing in Finn: An Extraordinary Surrogacy Story.
The question now is, what will the little boy call Kristine, grandmum or mum?
And is Sara his mum or his sister?
