Great news!
Little girls are the sweetest. Prepare to be wrapped tightly around those little fingers.
You may or may not have some incredibly difficult days ahead in the next twelve months. If you do, just remember that they're short lived. They will pass. Be there for both of your girls, dont overlook the small things and dont dismiss "baby blues" as a irrational feelings.
But most of all, enjoy the baby stage. Before you know it will have passed, and you can never, ever, get these days back.