Breast Size Prompts That Don't Work (Part 1) — Cup Sizes, cm Measurements, Weight Syntax

Conclusion

• Cup size notation (G-cup, K-cup, double D) has no effect — The concept of cup sizes is not reflected in breast size on this model.
• cm measurements (120cm, 150cm) have no effect — Specifying breast size numerically doesn’t work.
• Weight syntax (1.3–2.0) has no effect — From (huge breasts:1.3) to (huge breasts:2.0), there’s no difference from huge breasts alone.
• Numerical or category-based breast size specifications do not function — You need English adjectives (huge, massive, etc.) to increase size.

This is the detailed article (Part 1) for Comprehensive Breast Size Prompt Comparison. It covers numerical and notation-based approaches (cup sizes, cm measurements, weight syntax).

• Part 2 (slang, metaphors, syntax analysis): here
• Effective descriptions: see this article

Experiment conditions and base prompt: see the summary article.

Cup Size Notation

G-cup breasts

K-cup breasts

double D breasts

G-cup, K-cup, and double D all produced results comparable to the control. Cup size notation does not function on this model.

cm Measurements

120cm bust

150cm bust

Both 120cm and 150cm produced results comparable to the control. Specifying breast size numerically does not work.

Weight Syntax

The (keyword:weight) syntax works for some attributes — but what about breast size?

(huge breasts:1.3)

(huge breasts:1.6)

(huge breasts:2.0)

(massive tits:1.6)

Weights of 1.3, 1.6, and 2.0 all produced no difference from huge breasts alone (weight 1.0 equivalent). The same applied to massive tits at 1.6. Weight syntax has no effect on increasing breast size. No weight syntax effect was confirmed on this model.

Summary

Numerical and category-based breast size specifications do not function on this model. Weight syntax also contributes nothing to size increases.

Back to summary | Effective descriptions | Part 2: Slang, metaphors, syntax analysis

Related Articles

[Verified] Image Generation Prompt Best Practices

Breast Size Prompts That Don't Work (Part 2) — Slang, Metaphors, and Syntax Analysis