To be told she was expecting triplets was a big enough shock for any mother-to-be.

Now thriving at home after spending six weeks in intensive care, little Roman, Rocco and Rohan had another surprise in store for Becki-Jo Allen, however.

After being told how similar they looked by other mums, she sent off samples of DNA to be tested – and she has now been told that against odds of up to an incredible 200 million to one, the naturally conceived trio are identical.

Ten-month-old Roman, Rocco and Rohan Tierney are completely identical - meaning the odds of them being born were up to one in 200 million

The triplets' mother Becki-Jo Allen (pictured with the triplets and her daughter Indiana) was shocked to find out the three little cuties are all identical

According to the Multiple Births Foundation, the only way to establish for certain whether twins or triplets are identical – known as zygosity determination – is usually DNA testing