This is not my model to begin with, you can find it here.
https://civitai.com/models/332136/multi-sagging-breasts-for-ponyxl

Multiple concept LoRA for PonyXL
Usage Tips > clip skip 2, strength 1

Trigger words:

sagging breasts, beautiful breasts, small breasts, medium breasts, large breasts, huge breasts, gigantic breasts, lactation, large areolae, milking machine