Woman with Rare double Uterus, gives birth to twin on 2 Different days.

A 32-year-old woman from Alabama who was born with two uteruses and became pregnant in both gave birth to twin girls on different days, she announced .

Kelsey Hatcher and husband Caleb welcomed Roxi Layla on Tuesday night and her sister Rebel Laken on Wednesday morning at the University of Alabama at Birmingham Hospital (UAB), the mother-of-five announced on social media.

“Our miracle babies were born! They decided they were rare enough statistically that they should just go ahead and have their own birthdays too,” Hatcher wrote on Instagram.

Hatcher has a rare double uterus and was pregnant with a baby on each side, a rare pregnancy known as a dicavitary pregnancy that has a one in a million chance of occurring.

The first one, named Roxi Layla, was born on Tuesday at 7:49pm (0149 GMT Wednesday). She was joined by Rebel Laken on Wednesday at 6:09am. Each weighed over seven pounds (3.2 kilos).

Doctors had estimated a Christmas due date. But following 20 hours of combined labor after Hatcher was induced at 39 weeks, the sisters arrived just in time to be at home for the holidays with their siblings.

Although a typical twin pregnancy is defined by two babies in one uterus, Richard Davis, the physician who co-managed the pregnancy, said it is “safe to call the girls fraternal twins.”