After receiving the fantastic news that she would be the mother of triplet boys, this mother wasn't expecting another surprise. Britain's Becki-Jo Allen, 23, discovered that her children Rocco, Roman and Rohan are genetically identical. The chance of that happening is one in 200 million.

The children were born nine weeks early

All these boys spent a month and a half hospitalized in the neonatal intensive care unit. Because of the odds, the doctors who attended the boys didn't think they were identical triplets. But on returning home with the three babies, most family and friends could not tell who was who, other than mom Becki-Jo.

"I don't get them mixed up - it's only when they're asleep that they look the same to me. They all have completely different personalities." said Becki-Jo.

So, she decided to do a DNA test to see if the boys were identical triplets or not

After constantly getting stopped in the street by strangers asking if her three boys were identical, she went ahead and did the DNA test.

And the results? Yes, the triplets were genetically identical. "I was always convinced they weren't [identical], because that's what I had been told during my pregnancy," said Becki-Jo.

The mother never expected to have twins, much less triplets. "We haven't got any triplets in the family so it came completely out of the blue," said the lucky mother.

The boys wear 130 diapers a week, plus four packs of wipes. To feed the children you need a can of formula every two days.

In addition to the three boys, Becki-Jo has a three-year-old daughter who is not jealous of her siblings and loves to take care of the little ones.

This article was adapted and translated from the original, "Estes trigêmeos são tão idênticos que a mãe teve uma grande surpresa no exame. Veja as fotos." It was originally published on familia.com.br.