Di-di twins are like roommates with their own room and fridge. They each have their own placenta and amniotic sac – and because they don't share as many resources, they have a lower rate of ...

Jesy Nelson is bravely sharing her journey with Twin-to-Twin Transfusion syndrome. In January, the former Little Mix singer announced that she and Zion Foster were expecting twins. Earlier this month, ...

Examining each twin’s DNA will reveal whether they are identical or fraternal; fraternals also normally have separate amniotic sacs, as well as separate placentas. Are boy-girl twins always ...