Meet the Fokkens: Amsterdam's oldest prostitutes
2 October 2012 Last updated at 22:23 BST
Amsterdam's oldest prostitutes have been thrust into the spotlight with the release of their memoirs and a documentary film about their lives.
The film, Meet the Fokkens, follows 70-year-old identical twins Louise and Martine Fokken as they share secrets of selling sex in the city's famous red light district.
Anna Holligan reports.