From Civitai:

✨ B!G BODY – Figure Enhancer for FLUX 3 Klein ✨

Adds a fuller, curvier and more defined figure to women generated with FLUX 3 Klein, while keeping the face, pose, outfit and background intact. Works for text-to-image and image editing (reference) workflows.

🔥 What it does

- Fuller bust, narrower waist, wider hips and thicker thighs

- Natural skin texture, no plastic or waxy look

- Keeps identity, pose and scenery in edit workflows

- Works with swimwear, fitted clothing, standing or seated poses