A breast implant system is provided comprising a plurality of chambers includingone or more first fluid chambers (1 ) and one or more second fluid chambers (2).The first fluid chamber (1 ) forms part of a breast implant (10), whereas the secondfluid chamber (2) may also form part of the breast implant or may be implanted remotefrom the breast implant. The first and second fluid chambers are interconnectedso as to allow exchange of fluid between the first and second chambers, therebycausing the shape and, depending upon the specific embodiment, also the volumeto change accordingly.