Everyone with a sibling knows that familiar feeling of intense connection. Whether it's out of love or competitive jealousy, growing up as a child in the same house as someone near your age breeds a strange level of intimacy. Luckily, we part ways with our siblings as we get older, just before we're on the brink of killing each other. This was something the Hilton sisters never had. Daisy and Violent were born conjoined at the hip. Rather than see this as a hindrance in life, they made a career out of it. Their story even inspired two Broadway musicals.