For attaching an accessory to the body of vehicle, a clip is fitted with elastically deformable arms which are inserted by pressure and are secured in a mounting opening in the bodywork sheet. Each clip has a central base and at least six arms. The arms have end formations which rest in opposing senses against the opposite surfaces of the bodywork sheet around the mounting opening. Half of the arms rest on the exterior surface of the sheet and the other half of the arms rest on the interior surface of the sheet.