Have you thought about a version of lactomax, that allows us to make the girls produce milk without giving them absurd utters?
Depending on what you asked Lois, that might trigger a scene where I.R.I.S. explains the workings of LactoMax II.
This is all complete bollocks, of course, but here's the gist...
The long and short is that it's proportional to the dosage. A lower dose will trigger lactation (in the existing mammary glands).
At higher doses it triggers the development of more breast tissue in order to increase the amount of milk produced.
So if expertly managed, LactoMax doesn't necessarily result in any increase in breast size, but Iris cautions that LactoMax WILL cause some lactation.
Hence the only way for Lois to increase her bust without that would be bigger implants.
The original LactoMax was more of a blunt instrument. It caused massive and permanent changes, which is why Mallory is the way she is. Again, this is all nonsense of course!