A conformal electro-magnetic (EM) shield and a method of applying such a shield are provided herein as well as variations thereof. Variations include, but are not limited to, frequency-selective shielding, shields containing active and/or passive electronic components, and strippable shields that can easily be applied to and removed from underlying components. Variations of a shield structure include at least an insulating layer between the underling component and the shield, and shielding and/or capping layers disposed over the insulating layer.