Identical twins are a different issue. They might enjoy it. It should not get to the point where they rely on it for attention. Maybe take the same outfit but in different colors. We compare the similarities of identical twins to fraternal twins.
Genes play some role in the development of some traits.
This may tell us why we resemble our parents and why we don't. We may be parents with children and some might be similar and some might be different. Parents need to realize that when they think they are brining up their children, children participate in that process. Parents respond to their children. It requires understanding spouses.