Something in the water 😂 how should we announce?

Olive 🦋 • Wife, writer, stay at home mommy to Luna Violet and Kodiak Sage 🌑🐻
Sooo... two of my sisters are also pregnant... and we are all due within weeks of each other 😂 this is the craziest and most amazing thing ever! 
Anyone have any neat ideas on how to tell our mom? I just messaged my 3 sisters to let them know I'm pregnant before I announce to our mom, and 2 of them ended up being pregnant too! So we are looking for a clever idea on how to announce!