I know just from observation that breast reduction can produce a
really slimming effect in more voluptuous women. For instance, I'm
sure you might have looked at a woman and thought: She would look so
much thinner if her breasts were just a little smaller.
Also, about the diet--just make sure you aren't trying to diet while
you are recovering. Your body will need to heal itself and a diet may
leave you exhausted and lacking the proper nutrition you need during
recovery.
Hope this helps a little bit!