I bought this along with the 'Waiting for Baby' book in the series. This one is even more popular with my 2yr old than the other. We discuss all the pages and many questions are being asked about 'what will happen with...?' and 'can we do this?'. Bonus elements to the book are the fact that the mummy breastfeeds (though I've carefully explained this and bottles to keep my options open!), and the page where the child is sitting on the potty, whereas the baby is having its nappy changed. Perfect opportunity to show how grown up and special an older sibling is sitting on a potty, compared to the baby.
This book has gone in and out 'of fashion' with my child over the last few months along with other books, but each time its back in favour we have more and more conversations on the subject matter, even when we are doing activities shown in the book, rather than actually reading the book.
Our new baby hasn't arrived yet, but am confident this book will have made a difference and allowed us to discuss all sorts of questions and scenarios, even though of course there will still be the shock of a real life loudly crying new sibling. :-)