Have a look to some of the scars that some celebrities have shown from their breast cosmetic surgeries
These are the scars that Christina Aguilera probably got from a Breast Enlargement. Experts say that the singer has got a boob job.
Many of them are not very visible because they can be on the nipple.
For a decision like this the best thing to do is to ask your surgeon about his preferences. Depending on the procedure he should suggest what is better for you.