It's not so unusual for a pregnancy to result in twins, but nature is full of enough surprises that there's more to consider when this happens than whether they'll look the same or not.
That's because we can see twins share an amniotic sac in rare cases and many of those cases also feature a phenomenon called vanishing twin syndrome where one twin absorbs the other while in the womb.
But of course, there's also the possibility that those twins will end up conjoined together. And even then, how they end up joining can be just as unpredictable as whether it will happen.
I say all of that to express that it's hard to even calculate the odds that one pair of formerly conjoined twins would have the opportunity to live separate lives. And yet, we're about to see a case where that's exactly what happened.