He may not be heavy, but he sure is a career liability. A wayward sibling can do as much harm to a celebrity’s career as the famous person him or herself, and there’s nothing more dangerous for a star on the rise than a blood relation who refuses to keep his or her peccadilloes penned up. Kith and kin who lack a due sense of decorum—or with a penchant for, say, public drunkenness and other misdemeanors—can be the kiss of death for even the most promising of careers. While most of us can relate to the unfortunate messes that celebrities are left to mop up in the aftermath of the old flesh-and-blood’s race to the bottom, we’re left asking ourselves how much they’re responsible, just because of a few shared mitochondrial strands, for a sib’s bad behavior. From pistol-packing Pippa to the Clinton brothers, The Daily Beast gives you the brothers and sisters who left their family wishing that “close relation” was a bit more of a relative term.