Are we sure they're adopted? AFAIK they've not made an official statement, I think it was CNN that inferred it based on them previously talking about looking into adoption. I hope that's the case because it's better than surrogacy, it does seem fortuitous though that twin newborns, one of each sex became available quite quickly on what I'm told are long waiting lists.

I mostly try to avoid adoption discussion (any not just same sex) these days because I'm adopted and don't think it's always a brilliant fairytale so I have a lot of biased views that usually mean I end up arguing with someone which stirs up a lot of feelings for a while after about things which can't be changed.