The first reference to the apparel occurs in the novel, "O" Is for Outlaw.
outlaw | The Outlaw Josey Wales | Outlaw | Hell's Angels: The Strange and Terrible Saga of the Outlaw Motorcycle Gangs | Outlaw (TV series) | Outlaw motorcycle club | Outlaw country | Outlaw Heaven | outlaw country | outlaw motorcycle club | Outlaw (2007 film) | "O" Is for Outlaw | Little Britches (outlaw) | John Mason (outlaw) |