A former transexual hooker has shocked fans by telling how they are studying to become an undertaker. Trixie Huebschmann, aged 51, poses in undated photo. The ex sex worker from the city of Berlin, Germany, has become an undertaker. (@trixhuebschmann/CEN) Trixie Huebschmann - who was born a woman - is one of Germany's most famous sex workers with a biography and string of TV appearances about their lifestyle. But now…