Since the discovery of transistors, the trend of miniaturizing all possible electronic components has begun. This trend has eventually led us to the form-factor of electronic components that allows for integration with our skin, clothes, glasses, shoes, etc. Within this collection, we aim to cover the materials that make wearable electronics possible, and their applications constituting modern state-of-the-art wearable bioelectronics. The topics that will be covered will vary from the materials perspective (e.g., hybrid epidermal materials, soft/flexible/stretchable polymers, 2D materials, e-tattoos, e-textiles, functional conductive polymers, liquid metals, self-healable elastomers, hydrogels) to applications (e.g., electrophysiology, blood pressure, respiration, temperature monitoring, speech recognition, sweat biosensing, human-machine interfaces, smart contact lenses, limb replacements, electronic skins, touch sensing, etc.) We are specifically interested in methods that manifest comprehensive details on their device fabrication and provide application-specific technicalities (e.g., electrical contacts to the device, wearable integration of all elements, and on-body operation specifics, etc.)