Yep, there is a company called Naked & Famous, and yep, they make a pair of glow in the dark jeans ($TBD). The jeans have a phosphorescent coating which will naturally fade to make them even more unique with age.
"Just charge them up in the light (can be natural sunlight or artificial bulb light) and then shut the lights and watch "˜em glow! The jeans will also glow intensely under UV light (aka Blacklight), so if you wear the jeans in a club with a blacklight, your pants will appear neon green! Even the selvedge edges glow so flip up your cuff to flip people out!"