Twins Leah and Erin on their first birthday. (Pictures: SWNS)
Twins Leah and Erin on their first birthday. (Pictures: SWNS)

A couple are celebrating having a second set of twin daughters – born on the same date as their first twins.

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Born on January 25 eight years apart Erin, Leah, Charlotte and Isabelle Sullivan have beaten odds higher than winning the lottery.

The phenomenon is thought to be a 4.5 million to one chance for parents Zoe, 38, and Ben Sullivan, 42.

The Lossiemouth couple had to induce pregnancy ten weeks early for their second set of twins, Leah and Erin, resulting in them sharing their older sisters’ birthday.

Identical twins Leah and Erin with their older sisters Charlotte and Isabelle. (Pictures: SWNS)
Identical twins Leah and Erin with their older sisters Charlotte and Isabelle. (Pictures: SWNS)

Celebrating their birthday on January 25, was ‘manic’ according to the proud mum-of-nine.

Zoe said: ‘Our family isn’t one in a million, it’s one in thirty million.

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Dad Ben, an RAF engineer, said the four-person birthday takes planning and admits to buying only cupcakes for the sets of twins.

Ben said that the birthday is an ‘expensive day’ saying ‘we have to budget and put money away every month.’

Zoe Sullivan with her one-year-old children Leah and Erin. (Pictures: SWNS)
Zoe Sullivan with her one-year-old children Leah and Erin (Pictures: SWNS)

Born premature the two youngest twins were separated at birth to go to different hospitals: Leah in Inverness and Erin in Aberdeen.

The parents live an hour away from both places, in a house provided for them by the services.

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The twins’ other siblings are Elizabeth, 11, Olivia, 10, Noah, seven, Evangeline, five, and Tobias, four.

Zoe told the Scottish Mail on Sunday: ‘They weren’t jealous at all about sharing their birthday. They were just over the moon. They went about telling everybody.

Ben Sullivan with some of his nine children. (Pictures: SWNS)
Ben Sullivan with some of his nine children. (Pictures: SWNS)

‘And then the other children were like “Can we have a baby on our birthday?” But I don’t think I will be able to do that again, that was a complete fluke.’

The chances of twins is one in 50 but the actual odds of twins born on the same day to the same couple is actually one in 4,562,500.