You: "Papa, when I turn four I can wear that grey dress with those black shoes and I can fit in that dress that has a place for bosoms."

Me: "You won't get bosoms when you turn 4, it won't be for a long time."

You: "When I turn 8 will I get bosoms?"

Me: "No...I don't think so, probably not. Nothing you need to worry about now. You have a long time before you have to deal with bosoms."