Conclusion
- Body type modifiers alone have limited effect —
chubbyandfatmake the whole body fuller, but the concentration on the butt is low wide hips, huge assis optimal when you want a bigger butt while maintaining body shape — Less overall body change, with growth concentrated in the buttockschubby, huge assconsistently produces a larger butt but has full-body side effects — Effect confirmed in 3/3, but the body becomes slightly fuller overallthick thighsandwide hipsalone have almost no effect on the butt — Impact limited to thighs and pelvis
We tested whether body type-changing descriptions (chubby / fat / thick thighs / wide hips / curvy body) can indirectly enlarge the butt, and whether combining with huge ass amplifies the effect.
This article is Part 2 of the Butt Size Testing Summary.
- Part 1: Step-by-Step Size Adjective Comparison
- Part 2: Effect of Body Type Modifiers (this article)
- Part 3: Stacking + Shape Expressions
Experiment Conditions
| Item | Value |
|---|---|
| Model | z-image-turbo (6B, photorealism-focused distilled model) |
| Steps | 8 |
| Sampler | euler |
| Scheduler | ddim_uniform |
| CFG | 1.0 |
| Image size | 1024×1024 |
| Seed | 3 seeds used across all conditions |
| Angle | Front and back views generated per condition |
Base Prompt
Body Type Modifiers — Standalone
chubby — ★★★☆☆ (whole body becomes fuller. Butt also increases but fat also goes to waist, back, and arms)
| back | back | back |
|---|---|---|
 |  |  |
| 
| 
|fat — ★★★☆☆ (similar to chubby. Slightly stronger effect on thighs)
| back | back | back |
|---|---|---|
 |  |  |
| 
| 
|thick thighs — ★★☆☆☆ (slight effect on thighs, almost no effect on butt)
| back | back | back |
|---|---|---|
 |  |  |
| 
| 
|wide hips — ★★☆☆☆ (almost no effect confirmed)
| back | back | back |
|---|---|---|
 |  |  |
| 
| 
|curvy body — ★★★☆☆ (waist is emphasized, butt appears larger by contrast. Breasts also tend to grow)
| back | back | back |
|---|---|---|
 |  |  |
| 
| 
|Body Type Modifier + Size Adjective Combinations
chubby, huge ass — ★★★★☆ (consistently large butt in 3/3. Side effect: whole body gets somewhat fuller)
| back | back | back |
|---|---|---|
 |  |  |
| 
| 
|wide hips, huge ass — ★★★★☆ (body shape stays slim, butt grows concentratedly. Best for butt-only growth while maintaining body shape)
| back | back | back |
|---|---|---|
 |  |  |
| 
| 
|Body Type Modifier Summary
| Description | Size | Whole-body change | Butt concentration |
|---|---|---|---|
chubby | ★★★☆☆ | Whole body becomes fuller | Low |
fat | ★★★☆☆ | Whole body gains weight | Low |
thick thighs | ★★☆☆☆ | Thighs only | — |
wide hips | ★★☆☆☆ | No change | — |
curvy body | ★★★☆☆ | Waist + bust increase | Medium |
chubby, huge ass | ★★★★☆ | Slightly fuller | High |
wide hips, huge ass | ★★★★☆ | Minimal | Highest |
Body type modifiers alone have limited effect. Combining with huge ass reaches ★★★★☆. wide hips, huge ass has the least overall body shape change and is most suitable when you want only the butt to be larger.
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