Sir Paul McCartney's estranged wife Heather Mills appeared in a pornographic book when she was an unknown model. The animal rights campaigner, who found fame after losing a leg in a road traffic accident in 1993, performs a number of sexual acts in photographs in German book DIE FREUDEN DER LIEBE (THE JOYS OF LOVE), according to British newspaper The Sun. The graphic lovers' guide was published in 1988 when Mills worked as a model. The former beatle and Mills - who gave birth to their baby BEATRICE in 2003 - split last month (MAY06) after four years of marriage.