How old was your LO when you told them about a new baby? How did you tell them? How did they react?

I saw some videos the other day and I was shocked by how many siblings started sobbing, even if they were happy. It made me wonder if maybe all the emotion surrounding it just naturally results in a crying kiddo, whether they are happy or sad.

When I got pregnant with G, the twins were only 14 months old so we never really "told" them since they had no clue at that age. We talked about the baby generally, but even when they were almost 2 and he was about to be born, they didn't get it at all.