Very wide set breasts & large sternum - I'm scared I will not be happy with my results (Photos)

Thank you for your question. I wouldn't be afraid. Although it's difficult to tell from your pictures, you do have some mild chest wall asymmetry which may be associated with a mild scoliosis. All of this can be taken into consideration when analyzing the best option for you. I believe you can get a nice result with breast augmentation and recommend you see a board certified plastic surgeon experienced in breast enhancement You situation is not unique so do not be afraid. Best of luck!

Thank you for your question. The shape and slope of a rib cage has a significant impact on where natural breasts sit and point. The base of the breast sits on the platform of the ribcage and the breasts naturally point perpendicular to that platform. There is a huge variability in rib cage shape and this can be challenging for surgeons to provide the optimal shape and position.
Some patients have an indented sternum (Pectus Excavatum) which makes the breasts naturally sit too close together and point straight forward. In these patients we need to try to keep the implants separated so the breasts are not permanently touching across the midline when not in a bra.
You seem to have the opposite issue with wider set breasts and more of a gap between them as well as a more lateral projection of each breast. There are some strategies that can help provide better cleavage in similar patients, such as fat grafting the medial poles, releasing some medial pectoralis major muscle to drive expansion that way and choosing wider implants. All of these manouvers have some additional consequences or risks such as more cost (fat grafting), muscle retraction and animation (with more aggressive medial muscle release) and bread-loaf deformity (due to excessive medial release of tissues over the sternum with implants above the muscle). In addition, ideally the implant is centered behind the nipple horizontally and a natural lateral nipple position adds to the difficulty of the situation.
In the end it is best to see a well respected board certified Plastic Surgeon for an opinion about your options. My comments above are meant in a general sense as a description of some of the difficulties we face as surgeons, and without a proper in-person review and exam, no specific advice can be given.
I think the main consideration for all patients is that you are paying for a procedure and not an outcome. Outcomes are highly variable and wish list results are often perfect results in perfect candidates. Better surgeons provide better outcomes but no one can guarantee a specific result. I sometimes tell my patients that no combination of personal trainer and plastic surgeon is going to make me look like Brad Pitt in Fight Club. In the end, breast augmentation is designed to make your own natural breasts larger and not specifically to make them an idealized shape. Despite this limitation, the majority of patients are satisfied with the improvement in volume and the general results related to shape and position of the breasts.