Learning about where babies come from

[Chelltune]

My son is four and a half. He hasn't asked how the baby got into my tummy (yet!) but is interested in what it is like in there.

He knows that it is growing and where it will come out. I've explained that it isn't breathing yet, that it doesn't breathe for itselfs until it is born.

I think he would benefit from seeing some pictures in a book. Can you recommend an age appropriate book that explains all about how babies develop/are born and has pictures?

Thanks,
Michelle