Twin sisters are born and are completely different races.
21-year-old Kylie Hodgson of Nottingham, England, is half-black, half-white. So's her partner, 19-year-old Remi Horder. Back in 2006, they conceived twins. And when the twin girls were born, one was black... and one was white. Remee is blonde and white; Kian is black.
Since both Kylie and Remi are mixed race, when the two eggs were conceived, the one that became Remee inherited all of the white genes from the family, and Kian inherited all of the black genes.
The odds of this happening are at least a million to one.