All Peter's wigs are hand-made using human hair, so they look as real as possible. This also makes them very expensive - between US$4,500 and US$12,500 each! He knows he's done a good job when people don't realise the star of the film is wearing a wigs. So he was pleased when one newspaper said that Nicole Kidman had dyed her hair dark brown for a film. 'It was a wig and on one knew; he says.