Ideas how on to tell my kids


So I wanna tell them on Valentine’s Day but not sure how. I would love some cute ideas on how to tell my kids. My older 2 are 12 and 11 so I know they will understand when I tell them. But my youngest is only 2 so I pretty sure he will not understand just yet. I was think of getting shirts made say always big sister 2021. The boys would say Big bother one more time. An the baby’s promoted to big brother.

But then I feel like I’ve seen to many of those and it’s like why. Thought of getting a cake saying “new baby loading”

I’m just so lost please help me. Any idea is really appreciated right now. And baby dust to all who are waiting. An hey stop trying an have fun again.