Single-Arm Armpit Pose Test | Comparing 5 Keywords: one arm raised, left hand on hip, brushing hair back, and more

Key Findings

• one arm raised is the simplest and most stable (3/3). No prop artifacts or pose breakdown — just a clean single-arm raise with visible armpit.
• right arm raised, left hand on hip is also 3/3 stable. Gives you control over the other arm’s pose too, expanding composition options.
• raising one arm above head performs equally to A01 (3/3). No observable difference from the simpler phrasing.
• hand behind head drops to 2/3. Seed 789 produced a both-arms-behind-head pose.
• brushing hair back with one hand only 1/3. “Brushing” spawns a hairbrush prop, preventing the arm from rising high enough.

Experiment Design

Conditions

Prompt Template

Results by Condition

A00: Control (Both Arms Raised)

seed 42	seed 123	seed 789

Observations: 3/3 both arms raised overhead with both armpits exposed. Works as expected for a control. Halter bikini pairs well for clean armpit visibility.

A01: one arm raised

seed 42	seed 123	seed 789

Observations: 3/3 single arm raised with armpit exposed. The other arm hangs naturally at the side. The simplest phrasing yet fully stable. No text artifacts.

A02: raising one arm above head

seed 42	seed 123	seed 789

Observations: 3/3 single arm raised with armpit exposed. Nearly identical results to A01. The gerund form raising vs past participle raised made no observable difference. Use whichever reads more naturally in your prompt.

A03: right arm raised, left hand on hip

seed 42	seed 123	seed 789

Observations: 3/3 single arm raised, armpit exposed. The left hand on hip directive is also followed, giving a confident, gravure-style pose. Being able to control both arms independently is a significant advantage for composition planning.

Lab Director: The hand-on-hip counter-pose is doing the heavy lifting here. Asymmetric poses just hit different — way more alluring than the symmetric stuff.

A04: hand behind head, one arm up

seed 42	seed 123	seed 789

Observations: Seeds 42 and 123 successfully show one arm behind the head with armpit exposed. However, seed 789 produced a both-arms-behind-head pose — the “hand behind head” phrasing is ambiguous enough to trigger a symmetrical pose. Single-arm success rate: 2/3.

A05: brushing hair back with one hand

seed 42	seed 123	seed 789

Observations: Only seed 42 achieved a raised arm with visible armpit. Seeds 123 and 789 spawned a hairbrush prop — the word “brushing” was interpreted literally as using a brush rather than a hand gesture. The brush-holding hand doesn’t rise high enough to expose the armpit. Single-arm armpit success: 1/3.

Lab Director: “Brushing” summoning an actual brush is such an obvious trap in hindsight. If you want a hand-through-hair gesture without props, try running fingers through hair instead.

Cross-Condition Comparison

Summary

For a single-arm armpit pose, plain one arm raised works reliably at 3/3. No need for elaborate phrasing.

When you also want to control the other arm’s position, use right arm raised, left hand on hip — specify each arm explicitly. This also scored 3/3 and opens up more composition variety.

Avoid action-context phrasings like brushing hair back — they risk spawning unwanted props. hand behind head can also drift to a symmetric both-arms pose. For reliability, keep it simple.

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