Creams and lotions can serve to swell the skin temporarily.
Swollen skin is slightly larger that it was before it was swollen.
This difference is NOT significant and certainly will not make much difference at all in a bathing suit or bra. Injecting your own fat, harvested from another area by suction, is only effective in small areas such as facial folds. This would lead to unnecessary biopsies in later years and is certainly not a good idea. Newsbytes and updates on Cosmetic Surgery and related topics brought to your monitor. The information supplied in this site is not intended to serve as medical advice.