jettesen,
So what if it was a 'clever disguise'. Nowadays nobody can get on with anything more dangerous than a well-cooked strand of spaghetti anyway, and the cockpit doors are sealed.
This is not 'security', it's jobsworth. If the same rules need to apply to everyone, then change them - not everyone has a passport or photo driving license.
Also, you state that 'it does happen as you have seen before'. Name me an ocassion where someone has made themselves up to look 89 years old and forged (a) a birth certificate and (b) a bus pass I will agree that RYR were not being ar$es in denying her boarding.