Waking beside her boyfriend each morning teenager Krystal Griggs never knows what mood he’ll be in.
But rather than predicting good or bad, the 18-year-old has to choose between male or female.
For Ryan Wigley is bi-gender. He faces the difficult choice every day of whether to dress as a man or woman.
While most people need only pick from a selection of dresses, or smart shirts, he has rails full of both.
His outfit choice will depend on which gender he has woken up feeling like that day.
Half the time the 22-year-old from Kent rouses feeling like a woman, Ria, the other half, he feels totally male.
And sometimes, he gets the urge to shift gender during the day.
Ryan’s condition is recognised by psychologists and was coined by the transgender community.
‘It’s so confusing,’ he said. ‘I have to guess which gender I’ll be the following morning so I can plan my day.