Where to post pregnancy announcements?

Adrienne • Wife of a king 💏 3/25/17... Mommy of 2 princes 👲🏾2/10/04 👦🏽 8/2/14... and 1 princess 👶🏼 due 9/6/18

I keep seeing these amazing announcements and want to do a cute one too seeing that this is my last pregnancy but I’m confused on where to send them. Do I post to FB? Do I text? Do I have them printed and mailed? Help!