Hi Sylvia, liposuction technique varies from physician to physician. While the short answer is no and that it would only reduce the band size, reducing the amount of fat on the back and sides will likely result in a better and more comfortable fit.I suggest seeing a hi-definition physique expert who specializes in VASER HI-DEF liposuction. Best, Dr. Emer
The cup size should not change, however the band size may reduce say going from a 36 C to a 34 C, but bra manufacturers are not consistent, so depending on the bra you may see a difference.