If you get a bbl/liposuction/tummy tuck, and you gain weight post op, where does the fat go?

One of the benefits of fat transfer operations is that it will forever alter the distribution of fat in a favorable way.  I
would search for the board certified plastic surgeon who you feel is
most likely to give you the best results and who performs hundreds of
these procedures each year. I would look at patient reviews as well as
before and after photos on that surgeon's website.Kenneth Hughes, MDLos Angeles, CA

If you gain weight after surgery, you will accumulate fat intra-abdominally around your organs, and in the remaining fat cells under your skin.  You will have fewer fat cells in the areas you had liposuction, but the remaining cells can still grow and accumulate fat.  It is recommended that after body contouring surgery that you maintain your result with diet and exercise.  Significant weight gain negatively affects your body shape whether you have had surgery or not.  Hope this helps.

Thanks for your question. It is recommended to maintain a stable weight after surgery. However, if you do gain weight, it will distribute to every part of the body (including the areas where surgery was performed).