A mother in Alabama gave birth to rare "MoMo" twins after a previous twin pregnancy. In a rare case, a mother in Alabama gave birth to two sets of identical twins in back-to-back pregnancies. Britney Alba learned she was pregnant with twins for the second time roughly six months after she'd given birth to her first set of twins, a pair of boys named Luka and Levi, according to a statement(opens in new tab) from the University of Alabama at Birmingham (UAB). The first set of twins shared the same placenta — the organ that connects the uterus to the...