I'm 5 feet 2 (158 cm) my weight is 101 pounds (46kg), can I go for 425cc implants I'm a small B cup now.

Hi,The answer to this question is " what size do you want to be at the end of the procedure?"Bra cup size can be difficult to estimate, as one brand varies form another.  The best answer to your question will be a sizing system that puts you in a bra and has an insert of 425cc to represent the implant. You can then look in a full length mirror and decide if that is the final result you are after.From there it is up to the surgeon to plan a procedure and select a style and location of implant to meet your goals as best as is technically possible.This way  you can see what result a  certain implant may achieveAll the bestJeremy Hunt

Thank you for your question.This is perhaps the hardest decision for
a patient to make, as well as the surgeon. Cup size estimates can be
misleading, but I generally advise patients that they will experience an
increase of approximately one cup size per 200 cc. You can try on implants in
the office by placing them into a special bra.Approximately 50 cc (1-2 oz.) is added to the final volume to account
for flattening of the implant in the partial submuscular pocket. Once you
decide on a size you like, then add on about 25-50 cc, because in real life the
implant will be flattened slightly by your tissues.Multiple measurements need to be taken to fit
an implant to your exact anatomy. Have your surgeon's office show you the
charts of the implant dimensions for the various profiles of silicone and
saline from the manufacturer. Then you and your surgeon can piece
together the puzzle by matching your measurements, with your wishes, versus
your tissue cover and the available implants to arrive at a surgical plan.Keep in mind larger implants tend to have
more problems over the years.Since
silicone implants wrinkle less than saline implants, they might be your best
bet.You can also approximate this at home by measuring out an equivalent
amount of rice placed into a cutoff foot of old panty-hose, and put this in
your bra.Wear this around the house for
a while, and see what you think.Implant
size must square with assessments of tissue cover, breast diameter, and chest
wall width. Multiple measurements of your chest wall are taken (seven in
total). Implant size selection has been
an issue of much discussion. Therefore, I use a wide variety of methods, but the implant size is
always established preoperatively.Also,
patients are advised to bring reference photos demonstrating their ideal size
and shape. A photo album of patient pictures is maintained to assist them.
These photos ultimately help in determining where the implants will be placed,
since they can be shifted inside (to provide more cleavage), to the outside, up
or superiorly, and down or inferiorly during surgery. In determining the final
size selection, I always place the highest priority on the preoperative
measurements and potential tissue cover. Then, the patient’s verbal requests
are factored into the analysis.Our
average size over the last 6,000 implants was 350. Be sure to see only a board certified
plastic surgeon (by ABPS - The American Board of Plastic Surgery) who is a
member of ASAPS (The American Society for Aesthetic Plastic Surgery) and or a member
of ASPS (The American Society of Plastic Surgeons). Also, ask if they have an
established, high volume breast augmentation practice, performing several
hundred breast augmentations each year. Ask to see their before and after
photos if you didn’t see any on their website. If they are experienced,
they should have several 100 breast implant patients for you to view. I
would also recommend that your doctor offer you the chance to talk to past
patients who would be happy to discuss their experience with you. You
need to feel comfortable, so make sure the environment is safe as in an
accredited surgery center. Also, ask a prospective surgeon if he or she has
ever published journal articles in professional peer-reviewed journals, which
they can provide you.All the best,
“Dr. Joe”

Thank you for the question.  In regards to more specific advice, despite good intentions, online consultants will not be able to  very helpful.  Careful measurements, dimensional planning, and careful communication will be key.
Generally speaking, the best online advice I can give to ladies who are considering  breast augmentation surgery (regarding breast implant size/profile selection) is:
1. Concentrate on choosing your plastic surgeon carefully.  Concentrate on appropriate training, certification, and the ability of the plastic surgeon to achieve the results you are looking for. Ask to see lots of examples of his/her work.  2.  Again, have a full discussion and communication regarding your desired goals with your plastic surgeon. This communication will be critical in determining which operation and/or breast implant size/type/profile will most likely help achieve your goals.
In my practice, the use of photographs of “goal” pictures (and breasts that are too big or too small) is very helpful. I have found that the use of words such as “natural” or "C or D cup" or "big boobs" etc means different things to different people and therefore prove unhelpful.
 Also, as you know, cup size varies depending on who makes the bra; therefore, discussing desired cup  size may also be inaccurate.   Therefore, I ask that my patients not base their communication preoperatively OR  their satisfaction with the outcome of surgery postoperatively, on achieving a specific cup size. The use of computer imaging may be very helpful during this communication phase.
3.  Once you feel you have communicated your goals clearly,  allow your plastic surgeon to use his/her years of experience/judgment to choose the breast implant size/profile that will best meet your goals.  Again, in my practice, this decision is usually made during surgery.  The use of temporary intraoperative sizers, viewing the patient's breasts in the upright and supine position, are very helpful during the breast implant selection process.
I hope this, and the attached link, helps.  Best wishes.