Two possible ideas.
One. Im driving across the us, I stop in a small town, im seen by the local cops, who frame me for a crime and lock me up. Come midnight, im taken from the cell and to a strip club that they frequent. Theyre paid for delivering me to them, and im trained to become their newest act. With no one to get help from, i work hard and soon become their newest stripper and escort, renamed jewel.
Two. Im holidaying in a city in Europe. I meet a stranger in the bar of the hotel that im staying in. he walks me up to my hotel room and injects me with something that knocks me out. I wake up a day later, wearing a leather miniskirt, basque top, crotchless panties, thigh high fishnet stockings and 6in pumps, with all of my old id gone, and replaced with that of a prostitute named Tiffany Peaks. I would find that none of the authorities would help me, as somehow my outside identity has been erased in every computer.
Either of those will do, so, reply in post for whichever one you like best.