Dian Parry: legal action against a Christian centre
Dian Parry - once known to his congregation as the Rev Bill Parry - is claiming sexual discrimination because she was told to use the gents.
Father-of-three Ms Parry, 62, turned up for the prayer meeting at the Vine Christian Centre in Maesteg.
But pastor Alex Ashton ruled that despite her sex-change operation she was born a man and must use the men's toilets.
Ms Parry, from Croeserw, near Port Talbot, has been living as a woman for three years and underwent her gender realignment in February 2001.
It is not the first time she has had to fight for her rights.
In July 2000, she won £6,000 in an out-of-court settlement from Swansea College after claiming she had been discriminated against on a beauty therapy course.
The former non-conformist minister who once sported a beard wanted to learn make-up skills to help her look more like a woman.
She was expelled from the course after complaining she was not supplied with suitable models to practice on for the qualifying exams.
Three months later, she won the right to join the Welsh-language equivalent of the Women's Institute.
The all-women organisation Merched y Wawr - "Daughters Of The Dawn" - asked Ms Parry to leave when she turned up for her first meeting.
But it changed its membership rules after talks with the Equal Opportunities Commission under pressure from Ms Parry.
And in October 2001 a Bridgend clothes store apologised to her for refusing to accept a cheque written in Welsh, her first language.
Ms Parry was forced to resign as the non-conformist minister in Croeserw when she started to live as a woman.
But she and his wife of 41 years, Anita, who is standing by her, wanted to carry on worshipping.
Her latest legal wrangle over her sex-change rights centres on a Christian venue.
They went to the Vine Christian Centre but Ms Parry was recognised immediately and when the duo tried to attend a women's prayer meeting at the centre they were told they would not be welcome.
She said: "I use the ladies at public conveniences, while I'm shopping at Tescos and at my local doctor's surgery.
"In the eyes of the world I am a woman but unfortunately the Christian centre does not see it that way."
Ms Parry is taking the centre to Cardiff County Court next month under the Sexual Discrimination Act of 1975.
She is claiming the Christian centre has breached the act by banning her from the prayer meeting and from using the ladies toilets.
A spokeswoman for the centre said: "We are aware of the case and it is in the hands of our solicitor."