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Twin sisters who claim to be Amsterdam’s oldest prostitutes have retired after more than 50 years each in the business.

Louise and Martine Fokkens, 70, have decided they are too old after bedding a total of 355,000 men.

Mum-of-four Louise, says arthritis now makes some sexual positions “too painful”.

And Martine, who has three children, admits she finds it hard to attract punters – though one elderly man still has his weekly sadomasochism session.

“I couldn’t give him up,” she says. “It’s like going to church on a Sunday for him.”

(Image: Rex)

(Image: Rex)

The pair were the subject last year of a documentary Meet The Fokkens and they have written a book called The Ladies Of Amsterdam.

Both, who dress in identical red clothes, became prostitutes before the age of 20 to survive financially after escaping violent relationships.

They now look back on the “golden years” before Holland legalised prostitution in 2000.

Louise said: “It is very different now. We used to sit in the windows with clothes on. Today they are totally naked.”

Martine added: “Girls are working from the internet and from home – you are less likely to be spotted by the taxman.”