What is Quarter Cup Bra?

From Wikipedia,

A type of shelf bra, sometimes referred to as a cupless, open-cup, half-, or even quarter-cup bra. An underwire fashion design that offers minimal breast coverage, supporting only a portion of the underside of the breast, pushing the breast upward, and leaving the nipple and areola uncovered. Suitable for erotic purposes or when a woman would otherwise want to go braless.

Usage

Invoke the LoRA in the way you would normally use a LoRA. I've found that it doesnt always play nicely with other LoRA (your mileage will vary), but works fine with Textual Inversion.

Use the Trigger word QuarterCup, works with Bra's, Corset or Lingerie. There was a very limited image dataset used, so you may find that poses and subject breasts start to all look the same.

You may also find that inpainting works well, and may give you more flexibility that txt2img