Breasts on tray concept trained on 60 unique images. Looks like I was beaten to the punch with uploading, but I figured I may as well anyway since I have it.
Can generate clothed, nude, and semi-nude variations. For clothed, you'll want to include breasts out and open shirt in your negative prompt. It makes it a lot easier to generate images without the breasts being exposed. You can specify the shape of the tray via the round tray and square tray prompts.
Tested with multiple character LORAs and different models. You'll want the LORA weight to be at about 1, although you may want to add more weight to the breasts on tray prompt itself (1.1 to 1.2).
May come back to this later and fool around with trying out a lower DIM.