This is my first lora, but it seems to work ok. It makes realistic looking oval shaped areolas with prominent nipples like the title implies. I've noticed it will generate some strange looking nipples at times, but for the most part it works.

Example Prompt:
A beautiful woman poses in soft white lighting with subtle purple mood lighting on one side, in a studio setting. She has long light blonde hair that cascades down her chest in subtle curles, very modern style hair. She is vuluptuous and mostly naked, a bit of lingerie, some bra left. She has medium tear drop shaped breasts with oval nipples, oval areolas, large areolas, prominent nipples, and slightly saggy natural breasts. She is holding her breasts with her hands, pushing them up in a sexy way. Masterpiece quality, realistic, detailed skin texture, 4k, dramatic lighting