Thanks for your question. Liposuction of the upper back is very effective at removing unwanted fat in the area of concern but will not change the breast cup size as nothing was removed from the breast itself. Hope this helps.
In most instances lipo of the upper back will not alter a person's cup size. However, for some individuals some of the tissue that is placed within the bra is fat from the back/axilla region. In thoses cases, liposuction may actually alter the cup size slightly or at least allow the bra to fit more appropriately.Best wishes