I don't see how it really would make a difference. Lets look at a garment that is known to rearrange a body, the corset. Corsets are known for rearranging ones organs and bones permanently if worn continually. Corsets are made with steel boning.I don't know of any bra that offers any permanent structural change to the breast itself. Bras round out and lift the breast with soft cushion, and cushion is not a know material to shape fatty tissue (in this case a breast) in anyk way. In my opinion wearing a bra at night could have negative side effects such as acne on ones back and even ingrown hairs on the armpits.
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