Twin sisters graduate as valedictorian and salutatorian at nation's oldest HBCU
The Criss sisters share many things together, such as a love for tennis, restaurants, and movies.
But the shared honor of representing their graduating class is among their greatest achievements.
The twins born minutes apart but with different fathers
Twin sisters discovered they have different fathers due to a rare phenomenon called heteropaternal superfecundation, making them half-sisters instead of biological twins.