This was a fun yet painful experimental LoRA. The idea was rather than build an expansive dataset of breasts and meticulously caption each one so that during inference the user can prompt for what they're envisioning; why not leverage the model's native ability to edit, so the user can bolt on a pair of reference breasts instead?

In it's current state, it down right disrespects almost anything and everything you prompt for unless you're asking it to transfer the breasts from <image2> onto the person in <image1>. You can turn up the CFG and it'll take your prompt as a suggestion, but I wouldn't recommend asking it to do much more than what it was trained to do. This LoRA is beyond cooked, unless you just want to swap breasts, then it's pretty good.

Due to being trained on 250 synthetically generated triplet samples - if you try to use anything generated by Qwen 2.1 with it's default VAE you'll more than likely get a disgusting result. Also, having to comb through 40 different epochs to find the apparent best one has me exhausted with this LoRA and testing it's full capabilities. Please, feel free to experiment with it and report back what works and what doesn't.

Current Best Settings:
CFG: 1.0
Sampler/Scheduler: Euler/Simple
Steps: 25, or whatever floats your boat
<image1>: the image you wish to edit (can be nude, or clothed)
<image2>: ideally a clean frontal view of breasts. I've noticed it prefers a tight 2:3 portrait crop that contains the face, chest, and ending around the naval or hips (probably helps the model understand scale during the transfer).

Prompt: There's no trigger word, and each sample had it's own unique caption written for it. I wouldn't doubt it if it matters at all what you prompt for with how over baked this thing is, but prompt it just like you would the native model. Below are all examples to get you started. Tweak them or prompt however which way you wish. Turning up the CFG to ~3.00 sometimes gets the desired results, or try a different seed if it's not providing the results you're expecting.

Breast to breast (with reference image):
On <image1> (canvas), reshape the woman's breasts to match the size, shape, and appearance of the breasts of the woman in <image2>

Clothed to breast (with reference image):
On <image1>, remove the yellow polka-dot bikini top completely, and render the woman topless with her exposed breasts matching exactly the size, shape, and appearance of the breasts of the woman in <image2>

Clothed to topless (no reference image):
On <image1> (canvas), completely remove the yellow polka-dot bikini top from the woman, leaving her topless with her bare breasts exposed.