Trained on Pony Diffusion V6 XL.

LORA weight: -3 to 4+

This is a slider, Lora, so you can choose whatever weight you want, so experiment and find what suits you best. A positive weight adds abs. You can use even higher weights such as 8 and above it all depends on characters and checkpoints.

You can also add sagging breasts to your prompt to make it have an even stronger effect.

Make them stay or make them drop. It's your choice.

Site : https://civitai.com/models/727355/breasts-gravity-slider-ponyxl?modelVersionId=813349