You may be asking yourself, what are 'mono mono' babies? 'Mono mono' babies are twins who share the same amniotic sac and placenta. The medical term is monoamniotic, or "mono mono," and doctors say they occur in about one of every 10,000 pregnancies.

This sure is a close way to start life. And get this, the identical twin girls, Jillian and Jenna, were actually holding hands when they were born!

USA Today tells us:

Sarah Thistlethwaite said babies Jillian and Jenna were removed from ventilators Sunday after they were able to breathe comfortably.

Fortunately for mom and dad, they were able to hold them on Mother's Day.

Thank God all went well because 'mono mono' pregnancies are dangerous as the babies could experience entangled umbilical cords, which may cause death.

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