After using the OG breast shrinking LoRa I noticed it was very unpredictable, and would often do breast expansion instead, or only a small amount of shrinking, meaning wasted generation times.

I've taken the best outputs after much testing and retrained into what I feel is a more reliable version to turn busty women flat chested!

Usage: WAN 2.2 T2V or I2V - High LoRA

Strength: Tested between 1.00 to 3.00, doesn't seem to fry things

Sampler: Euler A / Simple

Trigger Keyword: brstshrnk. Can also add "her breasts shrink"

This is a Wan2.2 High LoRA only. The major detail of the transformation is in the high stage, no Low needed