The key to a happy family is having two daughters, according to a new study.
Researchers concluded that two girls are unlikely to fight, will play nicely together, rarely annoy their parents and tend not to wind each other up.
Scientists also claimed that they also make little noise, seldom ignore each other and are more likely to confide in their mother or father.
Researchers questioned thousands of mothers and fathers of under-16s to come up with the recipe for a harmonious family life.
Those with two girls were most likely to say their children were easy to reason with, helped around the house and generally got on well with each other.
After two girls, the second most appealing combination of children was one girl and one boy, with 86% of parents saying their little boy and little girl were genuine friends.
The third most favourable combination was two boys, with parents saying their sons pay each other lots of attention and are close friends — but are less likely to confide in their mum or dad as they grow up.