El-lights are an easy way, to bring lights on clothes.
Some of the following links show you, what they are doing, how to use or how company are useing them:
http://el-light.de/ (german side – company, where you can buy them and also find instructions how to use them)
http://en.wikipedia.org/wiki/Electroluminescence (english – wiki – what are el-lights?)
http://www.surelight.com/ (english – professional use – a company, which sells el-lights and everything around this. Here you find also products, like you can see below)