diff --git a/source/blender/blenkernel/intern/cloth.c b/source/blender/blenkernel/intern/cloth.c
index 7a2a4e09b3d..137b6a3d599 100644
--- a/source/blender/blenkernel/intern/cloth.c
+++ b/source/blender/blenkernel/intern/cloth.c
@@ -644,6 +644,7 @@ int cloth_uses_vgroup(ClothModifierData *clmd)
 {
 	return (((clmd->sim_parms->flags & CLOTH_SIMSETTINGS_FLAG_SCALING ) || 
 		(clmd->sim_parms->flags & CLOTH_SIMSETTINGS_FLAG_GOAL ) ||
+		(clmd->sim_parms->flags & CLOTH_SIMSETTINGS_FLAG_SEW) ||
 		(clmd->coll_parms->flags & CLOTH_COLLSETTINGS_FLAG_SELF)) && 
 		((clmd->sim_parms->vgroup_mass>0) || 
 		(clmd->sim_parms->vgroup_struct>0)||
@@ -684,6 +685,9 @@ static void cloth_apply_vgroup ( ClothModifierData *clmd, DerivedMesh *dm )
 			else
 				verts->goal= 0.0f;
 
+			/* Compute base cloth shrink weight */
+			verts->shrink_factor = 0.0f;
+
 			/* Reset vertex flags */
 			verts->flags &= ~CLOTH_VERT_FLAG_PINNED;
 			verts->flags &= ~CLOTH_VERT_FLAG_NOSELFCOLL;
@@ -721,16 +725,14 @@ static void cloth_apply_vgroup ( ClothModifierData *clmd, DerivedMesh *dm )
 								verts->flags |= CLOTH_VERT_FLAG_NOSELFCOLL;
 							}
 						}
-
+					}
+					if ( clmd->sim_parms->flags & CLOTH_SIMSETTINGS_FLAG_SEW ) {
 						if (clmd->sim_parms->vgroup_shrink > 0) {
 							if (dvert->dw[j].def_nr == (clmd->sim_parms->vgroup_shrink - 1)) {
-								/* linear interpolation between min and max shrink factor based on weight */
-								verts->shrink_factor = clmd->sim_parms->shrink_min * (1.0f - dvert->dw[j].weight) + clmd->sim_parms->shrink_max * dvert->dw [j].weight;
+								/* used for linear interpolation between min and max shrink factor based on weight */
+								verts->shrink_factor = dvert->dw[j].weight;
 							}
 						}
-						else {
-							verts->shrink_factor = clmd->sim_parms->shrink_min;
-						}
 					}
 				}
 			}
@@ -738,6 +740,18 @@ static void cloth_apply_vgroup ( ClothModifierData *clmd, DerivedMesh *dm )
 	}
 }
 
+static float cloth_shrink_factor(ClothModifierData *clmd, ClothVertex *verts, int i1, int i2)
+{
+	if ( clmd->sim_parms->flags & CLOTH_SIMSETTINGS_FLAG_SEW ) {
+		/* linear interpolation between min and max shrink factor based on weight */
+		float base = 1.0f - clmd->sim_parms->shrink_min;
+		float delta = clmd->sim_parms->shrink_min - clmd->sim_parms->shrink_max;
+
+		return base + delta * 0.5f * (verts[i1].shrink_factor + verts[i2].shrink_factor);
+	}
+	else
+		return 1.0f;
+}
 
 static int cloth_from_object(Object *ob, ClothModifierData *clmd, DerivedMesh *dm, float UNUSED(framenr), int first)
 {
@@ -811,6 +825,8 @@ static int cloth_from_object(Object *ob, ClothModifierData *clmd, DerivedMesh *d
 		else
 			verts->goal= 0.0f;
 
+		verts->shrink_factor = 0.0f;
+
 		verts->flags = 0;
 		copy_v3_v3 ( verts->xold, verts->x );
 		copy_v3_v3 ( verts->xconst, verts->x );
@@ -1237,10 +1253,7 @@ static int cloth_build_springs ( ClothModifierData *clmd, DerivedMesh *dm )
 				spring->type = CLOTH_SPRING_TYPE_SEWING;
 			}
 			else {
-				if (clmd->sim_parms->vgroup_shrink > 0)
-					shrink_factor = 1.0f - ((cloth->verts[spring->ij].shrink_factor + cloth->verts[spring->kl].shrink_factor) / 2.0f);
-				else
-					shrink_factor = 1.0f - clmd->sim_parms->shrink_min;
+				shrink_factor = cloth_shrink_factor(clmd, cloth->verts, spring->ij, spring->kl);
 				spring->restlen = len_v3v3(cloth->verts[spring->kl].xrest, cloth->verts[spring->ij].xrest) * shrink_factor;
 				spring->stiffness = (cloth->verts[spring->kl].struct_stiff + cloth->verts[spring->ij].struct_stiff) / 2.0f;
 				spring->type = CLOTH_SPRING_TYPE_STRUCTURAL;
@@ -1287,10 +1300,7 @@ static int cloth_build_springs ( ClothModifierData *clmd, DerivedMesh *dm )
 				        mloop[mpoly[i].loopstart + (j + 0)].v,
 				        mloop[mpoly[i].loopstart + (j + 2)].v);
 
-				if (clmd->sim_parms->vgroup_shrink > 0)
-					shrink_factor = 1.0f - ((cloth->verts[spring->ij].shrink_factor + cloth->verts[spring->kl].shrink_factor) / 2.0f);
-				else
-					shrink_factor = 1.0f - clmd->sim_parms->shrink_min;
+				shrink_factor = cloth_shrink_factor(clmd, cloth->verts, spring->ij, spring->kl);
 				spring->restlen = len_v3v3(cloth->verts[spring->kl].xrest, cloth->verts[spring->ij].xrest) * shrink_factor;
 				spring->type = CLOTH_SPRING_TYPE_SHEAR;
 				spring->stiffness = (cloth->verts[spring->kl].shear_stiff + cloth->verts[spring->ij].shear_stiff) / 2.0f;
@@ -1334,7 +1344,8 @@ static int cloth_build_springs ( ClothModifierData *clmd, DerivedMesh *dm )
 					}
 
 					spring_verts_ordered_set(spring, tspring2->ij, index2);
-					spring->restlen = len_v3v3(cloth->verts[spring->kl].xrest, cloth->verts[spring->ij].xrest);
+					shrink_factor = cloth_shrink_factor(clmd, cloth->verts, spring->ij, spring->kl);
+					spring->restlen = len_v3v3(cloth->verts[spring->kl].xrest, cloth->verts[spring->ij].xrest) * shrink_factor;
 					spring->type = CLOTH_SPRING_TYPE_BENDING;
 					spring->stiffness = (cloth->verts[spring->kl].bend_stiff + cloth->verts[spring->ij].bend_stiff) / 2.0f;
 					BLI_edgeset_insert(edgeset, spring->ij, spring->kl);