A wearable article for wearing by a user and comprising wetness sensing electrodes, wherein the wetness sensing electrodes are to be in contact with a wetting electrolytic liquid during normal use when the wearable article is wetted by the electrolytic liquid, and to operate as a capacitor upon application of a direct current at contact terminals of the wetness sensing electrodes when so wetted to facilitate capacitance measurement through the wetness sensing electrodes whereby wetness information of the wearable article is provided.