What’s the most money you’ve ever spent on a t-shirt?  We’re guessing it’s no where near the £256,500 ($405,000) price-tag on this diamond-encrusted number.  Although there doesn’t seem to be a charitable reason for the exorbitant price, the organic-cotton, “one-of-a-kind luxury product” was made using only renewable energy sources such as wind and solar.  Click ahead to learn more about the most expensive t-shirt in the world.