ugh. I got professionally fitted today which I recommend for all girls and women and now I am trying to deal with the harsh realities of believing I was one size when I am really another. The worst part is 30DD is not a common size at all and will be difficult to find and expensive. At least it's sister size, 32D is more common.
Most Helpful Guy
At 19 you are fully developed - It sounds like you are small frame with an above average bust - It is not very big - I would say you are at upper end of normal range - I would say it is probably a good size big enough for people who like big breasts and not too big so smaller boob fans would be put off but that said breast size are usually not dealbreakers0