A wearable UWB antenna is proposed and analyzed in this paper, which is totally fabricated with textile materials, except the feeding connector for testing. By implementing a multilayered structure, the antenna obtains a good matching over the whole UWB band while keeping its low profile. The performance of the antenna is unaffected when worn on the human body due to the shielding by the full ground plane placed under the patch. Besides that, high on-body fidelity and a robust performance are produced when the antenna is studied under several types of deformations.