London ? A woman with two wombs has given birth to triplets, in what is believed to be the first case of its kind, a hospital official said Friday.

Hannah Kersey, 23, gave birth to three girls in September, said Richard Dottle, a spokesman for Southmead Hospital in Bristol where the babies were born. The children spent nine weeks in the hospital.

The girls – identical twins delivered from one womb and a third fraternal sibling from the other – were delivered by Caesarean section seven weeks early, the British Broadcasting Corp. reported.

Kersey and her partner, Mick Faulkner, said they were “over the moon” at how healthy and happy the girls were.

“There haven’t been any similar account where three healthy babies are born of two wombs,” said Yakoub Khalaf, a consulting gynecologist at Guy’s and St. Thomas’s Hospital.

Simultaneous pregnancies in two separate wombs are almost unheard of – Khalaf said he had identified only 70 cases over the past 50 years worldwide – and the delivery of triplets from two wombs has never before been recorded.