When it comes to raising children, the idea of the nuclear family is on its way out. The idea that the best family structure includes a mother and father and two children has become outdated, and people have begun to realize that family comes in all shapes and sizes, and it doesn't take a particular type of family to successfully raise a child.
In fact, there are many successful people in this world who, for one reason or another, were raised in the absence of their father.
Check out this gallery to find out which celebs never knew their dad.