FWIW, we did make polypropelene (“silly-string”) implants illegal. They were pulled off the market by the FDA. So there’s kind of an upper-limit established.
Polypropylene implants absorb water very slowly, about <0.01% in 24 hours.[2] The polypropylene, which is yarn-like, causes irritation to the implant pocket which causes the production of serum which fills the implant pocket on a continual basis.[citation needed] This causes continuous expansion of the breast after surgery. Growth can only be alleviated by removal of serum by syringe. Problems can also arise if the breasts enlarge at different rates. This can be corrected by removal of serum or introduction of sterile saline. Continual breast growth will eventually result in “extreme, almost cartoonish breast sizes.”[3]
FWIW, we did make polypropelene (“silly-string”) implants illegal. They were pulled off the market by the FDA. So there’s kind of an upper-limit established.
(NSFW link) https://en.wikipedia.org/wiki/Polypropylene_breast_implant
we’re a very strange animal.