[BonitaDDs]

In my opinion most bras aren't good for your breasts most bras are poor quality and badly fitted certain styles crush the breasts into unnatural positions like most pushups or heavy padded bras which can damage the breast shape.
But there are some bras that can improve breast shape they are normally really expensive like the bradelis 3step there are other cheaper similar bras normally Asian that gather and hold the fat to the breast.
Sizing is another important one that nearly all women get wrong the band should fit very tightly you shouldnt be able to fit more than a few fingers under it and the cups should hold the breasts without digging in where the cup ends you should wear it so there's no back fat lines this could mean a few things the band is too high and loose or its a badly designed bra so breast fat is being pushed out of the cups.

So unless your bras are perfectly fitting and well made its much more healthy to go braless I do because I can never find well fitting bras i have over a d cup and they are still perky there are studies that show not wearing a bra improves sagging and stretch marks but some people have good results with bradelis so I am sure not all bras are bad just most.