fancesca castagnacci and m oritz waldemeyer are among the pioneering fashion designers incorporating a lady's -- incorporating l.e.d.'s into their clothing and accessories. is this just a gimmick or are these glittering garments actually where rebel -- wearable? >> when night falls in florence, it is not only the stars or street lamp that shine, but also of us have to -- also this hat. >> maybe it is not right for a trip to the supermarket, but you could certainly where it on the catwalk at a fashion show -- wear it on a cat walk at a fashion show. >> francesca castagnacci likes to play with new ideas. here illuminated head gear is a kind of brainstorming. the 28-year-old is working on using lights in everyday wear as well, for example in shoes. she has her feet on the ground and her head in the sky. >> light, the cosmos, satellites, the milky way, the entire universe -- i want to create accessories that lives through their own light, that are active and not passive. >> her luminous shoes are made of leather, silver, and have a hidden battery in their soles. >> the battery lasts for