This effect is called the let-down reflex.
And maybe, your nipples don't exactly fit into any of these categories.
The beautiful blonde, 26, suffered a on her way to the Dancing With the Stars finale after-party in LA yesterday, May 19.
The areola is the pigmented round area on your breast, while the nipple is the actual projection.
Infant and Young Child Feeding: Model Chapter for Textbooks for Medical Students and Allied Health Professionals.
This mechanism is important for breastfeeding or expressing milk, but it can also happen at other times.