Whether their bad luck was by chance or it was caused by a pea-brained friend or fan, these pop stars have had to face some unfortunate happenings in the past. Bruno Mars, Miley Cyrus and Justin Bieber are just a few of the names on our list, with all of these artists encountering their own strokes of bad luck.

Be sure to click through our list of 13 Artists With Bad Luck -- let's hope these artists have more positive events coming their way in 2012!