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LoRA Guide (for AI Generator by Prompt & Ref)

Learn what LoRAs are and how to use them with SDXL: when to apply them, recommended strength ranges, what each LoRA does.

Updated over a month ago

What is a LoRA?

LoRA (Low-Rank Adaptation) is a compact add-on trained to nudge a base model toward a specific look, body shape, style, or concept — without retraining the whole model. In ZenCreator, LoRAs are available with SDXL only (WAN does not support LoRAs). You can attach up to 3 LoRAs to a prompt and control how strongly each one influences the result.

Why use LoRAs?

  • Precision control over physique, age cues, or stylistic traits.

  • Consistency across a batch or series (e.g., keep the same body shape across outfits).

  • Modularity: mix different, compatible traits without hard-coding them into the prompt.

How LoRA strength works

  • Range:

    • 0.1 → 3.0 per LoRA (default 0.8).

    • 0.1–0.4 = subtle hint;

    • 0.5–1.2 = balanced control (recommended);

    • >1.5 = aggressive and likely to introduce artefacts (warping, seams, texture glitches).

  • When stacking multiple LoRAs, lower individual strengths (e.g., 0.6–0.9 each).

  • If you see artefacts, drop a LoRA or reduce strengths in 0.1–0.2 steps and simplify the prompt.

Using multiple LoRAs

  • You can apply up to 3 at once.

  • Prefer complementary combinations (e.g., Soft Fuller Figure + Thick Thighs & Wide Hips).

  • Avoid contradictory pairs at high strength (e.g., Slim Figure + Plus Size Body). If you must combine opposites, keep each ≤0.6 and let the prompt decide the balance.

  • Order doesn’t matter; strengths do.

Provider choice (quick rule)

  • WAN: most photoreal and detailed; no LoRA support.

  • SDXL: flexible and supports LoRAs. Choose SDXL whenever you need body/shape/style control.

LoRA catalog (intent & usage)

Each line explains what the LoRA is for, when to use it, and any notes. The aliases in parentheses map to your internal packs, so your team knows the source.

Large Breast & Hourglass

Emphasises fuller breasts with a classic hourglass silhouette. Great for “bombshell” aesthetics.

Tip: Pair with Classic Hourglass Shape at low strength if you need stronger waist definition.

Adjustable Large Breast

Breast emphasis with a different learned bias than v2; use when the first option under- or overshoots.

Tip: Start at 0.6–0.9 and tune in 0.1 steps.

Adjustable Large Breast 2

Alternative slider trained specifically for SDXL; try this if the above conflicts with outfit/pose.

Tip: You can combine 2 LoRAs for Breast to achieve giant results.

Cameltoe

Enforces tight garment fabric tension in the groin area (swimwear/activewear shots).

Tip: Keep ≤0.8 to avoid unnatural seams.

Soft Fuller Figure

Adds overall softness and fuller fat distribution. Natural look when combined with lifestyle prompts.

Tip: Works well with Soft Tummy & Curves.

Thick Thighs & Wide Hips

Stronger lower-body emphasis and wider hip line.

Tip: Pair with Classic Hourglass Shape for dramatic waist-to-hip contrast.

Plus Size Body

Plus-size proportions across torso and limbs.

Tip: Don’t combine with Slim Figure above ~0.5 each—pick one or keep both very low.

Soft Tummy & Curves

Visible belly softness and gentle curves.

Tip: Great for candid beach/lifestyle scenes; avoid aggressive sharpening in Upscale.

Elegant Mature

Mature facial cues and styling.

Tip: Pair with Classic Hourglass Shape or Athletic Tone depending on the vibe.

Athletic Tone

Toned physique with low-to-moderate body fat.

Tip: Combine with Slim Figure for a leaner look; keep both around 0.6–0.9.

Strong Muscular Body

Clearly muscular build and definition.

Tip: Works with studio/fashion lighting prompts; too high strength can harden faces — balance with neutral skin prompts.

Slim Figure

Slender proportions with minimal body fat.

Tip: Don’t overdo; >1.2 may cause limb thinning artefacts.

Classic Hourglass Shape

Tight waist with balanced bust/hip line.

Tip: Pairs well with Large Breast & Hourglass at modest strengths.

Triple Breast

Fantasy/anatomical variation for creative shoots.

Tip: Keep other body LoRAs low to avoid conflicts.

Best-practice workflow with LoRAs

  1. Write the core prompt (subject, camera, lighting, mood).

  2. Pick SDXL and add 1–2 LoRAs at 0.7–0.9 each.

  3. Add a negative prompt for anatomy issues (e.g., “extra limbs, deformed, bad hands, distorted proportions, watermark”).

  4. Generate 4–8 images, review artefacts, and adjust strengths by ±0.2.

  5. When satisfied, run larger batches.

  6. Finalise with Upscaler (for detail) and Face Swap last if you need a specific identity.

Prompting tips with LoRAs

  • Keep trait words in the positive prompt so the LoRA has context (e.g., “editorial fashion, hourglass figure”).

  • Don’t fight your LoRA with contradictory text (“slim figure” + Plus Size Body).

  • Use clean lighting and camera terms; messy prompts amplify artefacts.

Can you combine LoRAs?

Yes — up to three. Combine complementary traits and keep strengths moderate. If the result looks “pulled in different directions,” remove one LoRA or let a single LoRA lead at ~0.9 while the others sit at ~0.4–0.6.

Can we add a new LoRA?

Yes. We can integrate additional LoRAs or train a custom LoRA for your brand/persona.

What we need to train custom LoRAs

  • Rights-cleared dataset (typically 30–200 images) at ≥1024 px, varied angles/lighting, consistent tagging/captions.

  • Clear goal (style vs body shape vs character identity).

  • Usage constraints (where it can be used, allowed strengths, SFW/NSFW scope).

How to request

  • Send us: goal, 5–10 sample images, whether it should be exclusive, and any do/don’t prompts.

  • We’ll validate feasibility and, if approved, add it to your SDXL LoRA list with a clear name and default strength.

Quick troubleshooting

  • Anatomy glitches / seams → lower strengths; remove a conflicting LoRA; simplify the prompt.

  • Look not strong enough → raise one LoRA gradually (e.g., 0.8 → 1.0) rather than stacking more.

  • Soft/low detail → route to Upscaler.

  • Identity mismatch → finish with Face Swap as the final step.

Example starter settings

  • Lifestyle hourglass: SDXL + Classic Hourglass Shape 0.8 + Large Breast & Hourglass 0.6.

  • Athletic editorial: SDXL + Athletic Tone 0.9 + Slim Figure 0.6.

  • Plus-size fashion: SDXL + Plus Size Body 0.9 + Thick Thighs & Wide Hips 0.7.

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