Are my too big?

No such thing as too big ! Be proud of who you are and no do not flaunt them. Wear tasteful clothes and be sure people look but don't touch. Many girls will have something to say, just remember they are jealous. My daughters and I are large busted and we are proud. You should be measured by a professional to find your true size and realize you will not be able to wear those cute little frilly bras off the racks. You will always have to spend a little more. Good supporting bras are more comfortable and more flattering. avoid horizontal patterns and wear clothes that truly fit, don't squeeze into clothes which do not fit on top. At 40 years old I did decide to have a reduction only because of back problems. Remember your bra size will change many times, with each pregnancy, fluctuations in weight and age. So, again, wear good supporting bras and you will be fine and you'll be avoiding saggy s later on in life.