I have a question to all the second or third time momma's. And it's kinda weird to ask but I'm…

I have a question to all the second or third time momma's. And it's kinda weird to ask but I'm wondering when u go threw a third pregnancy does your boobs change. Like can u see physical changes. Like around the nipples i mean it's already dark from having one baby. Does it change by getting darker or what happens.