Having a sister can be really amazing, a special relationship where you are like best friends who live under the same roof.
What if we told you that it has been scientifically proven that having a sister makes you happier? Yes, really.
Researchers at De Montfort University surveyed 571 people aged 17 to 25, and they found that those with sisters tended to have more balanced lives.
Professor Tony Cassidy, from the University of Ulster, who carried out the research along with people from De Montfort University, said: '"Sisters appear to encourage more open communication and cohesion in families.
And apparently, brothers seem to have the alternative effect.
"It could be that boys have a natural tendency not to talk about things. With boys together it is about a conspiracy of silence not to talk. Girls tend to break that down."
"Emotional expression is fundamental to good psychological health and having sisters promotes this in families."
Girls who had other sisters ranked highest in the study when it came to Independence apparently, whereas boys who only had other brothers ranked lowest.
In fact, growing up with just one female in the family makes it easier for families to cope with issues.
Researchers believe daughters encourage people to communicate their emotions better, allowing families to remain close.
What do you reckon, mums?
