bedrock-samples/resource_pack/render_controllers/stray_clothes.render_controllers.json

{
  "format_version": "1.8.0",
  "render_controllers": {
    "controller.render.stray_clothes": {
      "rebuild_animation_matrices": true,
      "geometry": "Geometry.overlay",
      "materials": [ { "*": "Material.overlay" } ],
      "textures": [ "Texture.overlay" ]
    }
  }
}