It means for three months of each year, the sisters are all the same age.
Mrs Singh said: ‘People can’t believe it when I tell them all the girls are the same age, yet they aren’t triplets.
Their first daughter Cara was born in July 2008. They started trying for another baby three months later.Mrs Singh said:
We had wanted to have babies close together so we thought when Cara was three months old that we should start trying as we didn’t know how long it would take.More photos when you continue