Is 32B size normal for 18 year old or is there a need to work on it? If yes, then how can I work on it?

Hi vaish0327 , I understand your concern. However, normal breast size and appearance for a certain age group is a rather debatable topic and is considered highly subjective. If you are, however, unhappy with how your breast looks, you can certainly consider breast augmentation surgery. You should visit a board certified plastic surgeon to discuss your concerns and also to have yourself properly assessed. Only after a thorough examination you will get more information and recommendations.

Daniel Barrett, MD, MHA, MS

Certified, American Board of Plastic Surgery

Member, American Society of Plastic Surgery

Member, American Society of Aesthetic Plastic Surgery

vaish0327.  Factors like height, weight and body type all contribute to deciding which breast size is appropriate for each individual. Bottom line, if you are happy with the size of your breasts, then that is the perfect size for you! Try not to be coerced by boyfriends or other individuals, as it is your body and Your opinion and desires are all that matter! Don’t do anything right now unless you are unhappy about the size of your breasts. If you are considering breast augmentation, consult with a board-certified plastic surgeon in your area. Good luck.

 I recommend an in person consultation with a plastic surgeon to discuss your goals and be measured. After I do this with my patients, we then look at pictures of women with similar measurements with different size breast implants. My patients tell me that this process is very helpful in determining what size breast implant is right for them.
Dr. Ted Eisenberg, Board Certified Plastic Surgeon and Author

Thank you for your query, this is an important question that bothers many young women.
There is no such thing as one correct breast size for a particular age and height. They come in all shapes and sizes. The only one whos opinion matters is yours. IT is important that you are happy with your body shape
If you are unhappy with it, then there are options to improve the size and shape. IF you are happy with it, then more power to you. Ultimately your self confidence is all that matters

Hello and thanks for your question. Breasts come in all kinds of different shapes and sizes. "Normal" should be defined by what shape and size fits your personal goals/desires. That being said, there is an optimal shape/size based on an individual's height, weight and body frame. A consultation with a plastic surgeon will discuss what your goals are and if those goals can be met surgically. Hope this helps.

Breasts are all different and come in different sizes, there is not one  normal breast size.  Breasts continue to develop and change. If you feel that your breasts are too small for you, then you might want to consider a breast augmentation but if you are happy with your size that is ok too. 

Whether this size is good for you depends on your height and weight.  If you are average sized a 32B is totally normal.  If you are unhappy with your size and proportions then maybe a breast augmentation will help.

Thanks for your question. While I understand your concern, it is important to understand that “normal” is highly subjective when it comes to the size of the breasts. If you are unhappy with your breasts at this point, there are steps you can take to enhance your appearance. Breast augmentation is a surgical procedure that uses implants to improve the size and shape of the breasts. With a variety of sizes and shapes to choose from, you can tailor your procedure to your unique body proportions and desired outcome. To determine whether breast augmentation is the right choice for you, spend some time looking at breasts that are closer in size and shape to what you want. At our office, we also use the Vectra 3D imaging system to help patients visualize what they might look like after breast augmentation. The most important step you can take in this process is to select a qualified, experienced plastic surgeon that will take sufficient time with you to ensure your specific aesthetic goals are met. Good luck to you!

At age 18, there are probably many questions you may have about "what is normal,"  and, being female, it makes sense that breast size might be one of them.  Rest assured that the only opinion that counts is yours, and if you are comfortable with the way you feel and look in your clothes, then 32B is perfect for you.  
B and C are relatively average cup sizes,  but remember that the cup size is determined by the difference between the circumference around your rib cage and the circumference around your breasts. So the exact same breast on three different women would likely result in different cup sizes, if their rib cage width is different.
But, if you feel that your current size is too small for you, then surgical breast augmentation could be an option for you, whether by implant or fat grafting. The latter can sometimes be less predictable in terms of how much of the transplanted fat will survive, and there are potential size fluctuations if you gain or lose weight.
But, I would advise you to hold off on augmentation until you're certain you have finished with breast growth (if you have had the same bra size for at least two years).  And, I would also keep in mind that if and when you become pregnant in the future, you will naturally have some breast changes that may have some bearing on your decision today.
Your best bet is to obtain a formal consultation by a board-certified plastic surgeon, who will evaluate your individual case and give you advice that is appropriate just for you. But above all, trust yourself, and not what society tells you.  My best to you.