Enlarged trapezius muscles after breast reduction?

Thank you for your pictures. Based on your pictures removal of 470 g of breast tissue breast in my opinion would not  disproportionate. If you're concerned about your final breast size please discuss this with your plastic surgeon

Best Scar Management PracticesBest Scar Management is important to minimize or completely hide from view, the telltale signs of your surgery—namely, scars. Both you and your surgeon want you to have the most minimal scarring possible. There are many possible causes for scars that are enlarged o...

Breast reduction is possible. It really depends on your Surgeons philosophy. If you have significantly large breasts, which you may, then surgery may be an option. You must undergo significant consultation by your plastic surgeon along with your parents.  You should get several opinions.

From your photo it would appear that you are a good candidate for camouflage tattooing of your scar. Go to an experienced medical tattoo artist that has experience in areolar tattooing. Your plastic surgeon should be able to refer you to one. 

Thank you for your pictures.  In my opinion cup size does not factor in the final result.  As with any breast procedure, I try to make the breasts match the patients frame.