An Austrian brothel has bought a second sex doll after its first became more popular with customers than real women.

The unusual story of 'Fanny', a sex doll which has become the top-selling superstar of the Kontakthof brothel in Vienna, became worldwide news in July.

Kontakthof, which rents out sex doll Fanny for 80 euros (£72.90) per hour, now has a second sex doll due to the huge demand as Fanny is often completely booked for several days in a row.

The unusual story of 'Fanny', a sex doll which has become the top-selling superstar of the Kontakthof brothel in Vienna, became worldwide news in July

Kontakthof, which rents out sex doll Fanny for 80 euros (£72.90) per hour, now has a second sex doll due to the huge demand as Fanny is often completely booked for several days in a row

Fanny, who is 5ft 1in and weighs 6st, has long blonde hairs and big breasts.

Austrian media are reporting that a growing number of other brothels are making the switch to include sex dolls.

Peter Laskaris, who operates two brothels in Vienna, said that although life-like dolls from Japan 'cost up to 7,000 euros (£6,382)' it is 'obviously a trendy sex fetish' which other brothels must also follow.

Sex industry experts estimate that people with a fetish for sex dolls is are an increasingly growing group, and that they expect more dolls to be made available by brothels.

Psychologist Gerti Senger explained why some men are more interested in sleeping with Fanny instead of a real woman.

Senger said: 'First, the man can do anything with the doll. Second, every intention is turned off, which can be a factor with a prostitute.'

Yet Senger, who is a co-chair at the Austrian Society for Sexual Research (OeGS), said that she was shocked by Fanny being more popular than real prostitutes and called it 'a real autistic tendency'.