Stable Diffusion Prompt for Small Breasts

Generating images of women with small breasts using AI image generation models like Stable Diffusion can be challenging. The AI model has likely been trained on datasets with a bias towards larger breast sizes. However, with careful prompt engineering, it is possible to guide the model to generate more petite figures.

In this article, we will explore prompt strategies for reducing breast size in Stable Diffusion images. We will cover both positive and negative prompts, weighting, artistic styles, framing, and other techniques to consistently yield small-breasted results.

Positive Prompts

Here are some positive prompts to try that directly describe small breasts:

(small breasts)
(tiny breasts)
(flat chest)
(petite breasts)
(modestly endowed)

Wrap these prompts in parentheses to boost their influence in the final image.

You can also combine multiple prompts, like:

(small breasts), (flat chest), petite

Other helpful descriptors:

slender
skinny
thin
narrow shoulders
delicate collarbone
petite frame
slim
lean

Use adjectives like “dainty”, “petite”, “slim”, and “narrow” to describe features besides just the breasts. This guides the model to generate an overall smaller figure.

Negative Prompts

Negative prompts are just as important as positive prompts. Here are some useful negative prompts for reducing breast size:

(large breasts)
(huge breasts)
(big boobs)
(massive melons)
(giant jugs)
(enormous breasts)
voluptuous
busty
top-heavy
front-heavy

The more exaggerated descriptors in the negative prompt, the more it will suppress those attributes.

Weighting

You can control the influence of prompts by assigning a weight value from 0 to 1. For example:

(small breasts):1.2, busty:-0.8

Higher positive weights and more negative negative weights will steer the output more strongly.

Artistic Style

The choice of art style can also affect breast size:

anime
Disney
Pixar
cartoon
illustration
vector art

These styles naturally lend themselves better to petite figures.

Conversely, avoid art descriptors like:

pinup
glamour photography
boudoir

Framing

Cropping and framing is another useful technique. Close-up portraits and headshots eliminate the issue of breast size altogether.

portrait
headshot
close-up

Full body framing tends to make breast more prominent. Avoid prompts like:

full body
head to toe

Advanced Prompts

For best results, combine multiple techniques into one prompt:

((small breasts)):1.2, ((flat chest)), skinny, narrow shoulders, delicate collarbone, ((busty)):-0.8, headshot, Disney style illustration

This advanced prompt includes:

Multiple positive descriptors of small breasts
Negative suppression of large breasts
Weighting to strengthen influence
Related body descriptors
Negative framing prompt
Artistic style prompt

With practice, you’ll develop an intuition for prompts that reliably yield petite results.

Example Images

Here are some examples of Stable Diffusion images generated using prompts for small breasts:

Example 1

Prompt: (small breasts), flat chest, delicate collarbone, portrait

Example 2

Prompt: ((tiny breasts)):1.2, busty:-0.8, Disney style

Conclusion

Generating petite breast sizes requires carefully engineered prompts and negative guidance. But Stable Diffusion offers powerful control through positive and negatives, weights, artistic modifiers, framing, and more. With experimentation, you can learn prompts that work for your desired aesthetic.