Louise and Martine, who are veterans of Amsterdam's famous Red Light District and have a century of experience between them, star in Meet the Fokkens.
In a trailer, released today, they describe how times have changed since they started their career in the early Sixties, and how they feel about the public perception of their trade.
Comparing the early days of the prostitution world with the present day, she recalls: 'In the old days, the local copper would tap on the window if a girl was showing too much ankle, now the girls deal coke from their cubicles.'
Louise explains that arthritis forced her to retire two years ago, because she 'couldn’t get one leg over the other' - though her sister continues to work. 'My twin sister is still working in her old age,' she says. 'She needs the money. You can't live off a state pension.'