A 27-year-old woman Casey Saunders has delivered rare set of identical twin girls in Colorado.
The woman had already given birth to identical twin boys with her husband Eugene Goree before having the girls.
The rare set of twin girls are known as Monoamniotic Monochorionic or MoMo twins.
the twin boys were happy to meet their sisters Photo source: The Beginning
Doctors describe the rare case as something that happens about once every 250 births.
The twin fetuses connect to the placenta via their umbilical cords.
Resting together in the same sac puts them at risk for cord entanglement or cord compression.
it was gathered that the birth of the twin girls was against 10-million-to-one odds Photo source: The Beginning
I called Eugene and said: ‘You’re not going to believe this.’
He was surprised but really excited from the beginning."
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The twin boys already stepping into the role of big brothers Photo source: The Beginning
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Mother of twin boys delivers rare set of twin girls after giving birth to twin boys Photo source: The Beginning