The early arrival of the baby of Kim Kardashian and Kanye West has prompted celebrity doctor, Dr Mehmet Oz, to warn the celebrity couple to "really focus" on their premature bub.
During an impromptu interview with US Weekly Dr Oz shared his own experience with his youngest child who was born early.
"I've been following Kim's story, which I have a personal interest in aside from being a doctor," Dr Oz explained.
"Our youngest child [Oliver] was born five weeks premature. So I know how hair-raising that is."
According to the World Health Organisation about 15 million babies are born preterm - that is before 37 completed weeks.