Can 175 or 205cc get me to a 32B from 32A? I am super sporty petit 1.53 mt and 43 kgs. (photos)

Hello and thank you for your question.  The
best advice you can receive is from an in-person consultation.  175 or 205cc may be reasonable for your goals.  The size, profile, and shape of the
implant is based on your desired breast size/shape, your chest wall
measurements, and soft tissue quality.  This decision should
be based on a detailed discussion with equal input from both you
and your surgeon.   Make sure you specifically look
at before and after pictures of real patients who have had this surgery
performed by your surgeon and evaluate their results. 
Best wishes and good luck.
Richard G. Reish, M.D.
Harvard-trained plastic surgeon

An in person consultation would be necessary to perform a breast implant sizing evaluation to determine if 275 cc fits your muscle pocket.  Most patients think in terms of cup sizes; where breast implants are measured in volume.  The average breast implant in the US is 350 cc.  Typically you will not notice a significant different between breast implant sizes unless they increase by 100 cc's. Try on a profile bra with sample silicone implants under a tailored blouse, tight sweater, swimsuit, and other garments you typically wear so that you have the best idea of whether the garments fit as desired with the implant selected.  I would recommend that you go with the size that boosts your self-esteem, and fits your anatomy.
Kenneth Hughes, MD, Board Certified Plastic Surgeon