I wish the Perchance guy would be open and honest about what he uses to generate his images. I have tried so many different checkpoints, LoRAs, text encoders, etc, and no combination can do anything close to what his does. His understands "hyperbreasts" and doesn't try to turn them into a cartoon. It understands when I say "broken bra around her shoulders". It understands how clothing should behave when huge breasts tear through them. None of the checkpoints I run locally can do anything like that.
Rumor on the forums is he uses Deliberate and Reliberate, but I tried using those with different weights and still no dice. My results actually look more cartoony than real. They are very small checkpoints that can run on even tiny video cards. I get better results using CyberRealistic checkpoint with the breast size slider LoRA, the Hyperbreast LoRA, and the Super Gigantic Breasts LoRa. Adding the Cleavage Bulge LoRA and Button Gap LoRA can also boost the breast size. I usually use a combination of 3 or 4 of these at low weights to get semi-realistic looking huge breasts that don't have a plastic look or fake nipples. I don't like using the porn based checkpoints because they have a tendency to give you a very made up porn girl look to everything. I prefer more "girl next door" than "porn actress" as my subject.
Punchy