None of them.
4/5 boys in One Direction has sisters. Zayn has 3 sisters, Louis has 4 sisters, Harry has 1 sister, and Liam has2 sisters.
niall
he has 4 sisters.
Louie has five sisters that are younger than him
zayn malik
No, but he does have three sisters.
3.
Louis Tomlinson
Niall Horan.
There are five members in One Direction.
None. He has one brother.
Louis Tomlinson