Heavy Flowing Breasts is an Illustrious LoRA focused on giving breasts more weight, softness, and gravity rather than simply making them larger.

It emphasizes lower-pole fullness, natural drape, soft deformation, and a less spherical silhouette. The goal is heavy, not saggy; full and firm, but not rigid.

Recommended strength: 0.4–0.7

Lower values give a subtler effect. Higher values strengthen the shape change but may also begin affecting framing, pose, lighting, or overall image stability.

Works best with: medium-to-large breasts and poses that allow visible gravity, drape, compression, support, or body contact.

Less effective with: small breasts, strongly lifted/perky poses, and heavily clothed characters.

The LoRA mainly changes shape rather than size. Larger breasts show the effect much more clearly, while small breasts may remain mostly unchanged. On clothed characters, higher strengths may encourage the model to emphasize or reveal the chest instead of reproducing the same shape beneath the fabric.