The raunchy £13 million production will begin filming on Easter Monday for three weeks at Island Studios, near Ramsey.

The models are some of 66 people who Nina's People, the firm casting the extras for the film, has brought over from the UK.

They were part of a 500-strong group which auditioned for parts at the Hilton Hotel, Douglas, on Sunday.

The Libertine is the story of the Earl of Rochester, the 17th century poet who drank and debauched his way to an early grave only to receive widespread posthumous acclaim. Depp takes the title role and John Malkovich and Samantha Morton co-star.

Nina's People boss Nina Carter said: 'My job is to find as many people as I can to fit the description the film production company has given me.

'They wanted people between the age of 20 and 65 to appear in this movie and contrary to popular belief it is not a "nude" film — it is a movie where some people will be asked to reveal certain parts of their body, but it is to create an illusion of a 17th century theatre and all the extras that we are providing will be there to create the ambience of people surrounding the Earl of Rochester at that time. Some extras will be asked to shout things out from the audience, some will be wearing elegant costumes, some will be wearing dresses off the shoulder and those who are doing scenes where they may be asked to reveal parts of their body have been thoroughly briefed.

'If you can imagine, it's the time of King Charles, when morals were low and it was a decadent lifestyle. Therefore the scene that will be shot will be decadent and it will be pretty wild in places, but it is all going to be shot in Island Studios in a mock-up theatre. It is not nudity for the sake of it, it is portraying a story from that time.'

Nina said the models pictured, who are from an agency in Liverpool, are among those who might be asked to do 'some of the more revealing scenes'.

But she added: 'We're not just looking for "glamorous" people – we're looking for large people, men and women, people with character. We need a mixture of people of all ages.

'We had 500 people at a casting session at the Hilton Hotel on Sunday and most of them were from the Isle of Man, but we did bring in 66 people from the UK.

'I have been looking for people who are uninhibited, but it is only a small section of the total number of extras, possibly only 30, who will be required to be naked or semi-naked. I've covered my back by interviewing people in the Island and bringing some to the Island.'