Sunglasses at Night

Rock stars are usually creatures of the night, but sometimes any form of light (moon, etc) is still too bright. Actors and models also take part in the sunglass at night. Are they covering something up, or just trying to be discrete? Whatever it is, it looks like the trend isn't leaving red carpets or parties any time soon, so check out TMZ's gallery of those who got it made with the guy (or gal) in shades!