There's no chance of Robin, Rebecca and Ruby Mackriell's parents forgetting their birthdays - because all three children were born on the SAME DAY.
Robin, now 14, arrived first - on 29 January, 1994. Rebecca arrived on the same day - two years later - and Ruby was born on 29 January this year.
Maths experts say the chances of this happening are more than 130,000 to one.
Robin arrived early, Rebecca was born late and Ruby was born in a pre-booked operation called a caesarean section.
It turned out that January 29 was the only date the hospital could do!
The children and their parents - Martin and Kim - live in Gloucester in south-west England.