I have only been "clocked" or outed three times so far in some 20 years (I have transitioned twice). I also hate it when it happens. Mind you as the HRT has worked its magic and the more I live as a woman the less it happens. I am quite lucky in some ways as I have very small hands, small feet (UK size 41), average height 5'6" and no Adam's Apple at all.
I also have had my Colours Done which has helped me blend in incredibly well, with clothes and make-up that naturally show off my skin tones. However the three times I have been clocked (all before I invested in getting my colours done) were all nerve racking for me. Twice was from young children and once a group of men:
The first happened in Oxford Street outside Selfridges. I had just had my eyebrows threaded and came out of the store and waited for a bus to take me back to my hotel, when a young boy (Eastern European I think), started shouting its a man in a dress). I went bright red and walked away towards the tube losing myself as quickly as I could in the crowd of people. The second time it happened when I was with a CIS girlfriend in Marks & Spencer in Bournemouth looking at some bras. There was a group of young teenage girls all looking at the push up bras and one pointed at me and started s->-bleeped-<-ing. I beat a hasty retreat into the lift. The last was the most frightening. I was crossing the road in Exeter (actually heading to my beauty therapist) in front of two young men in a car stopped at the crossing when a big gust of wind literally blew my dress up in billions and then to make matters much worse lifted my wig up off my head making me chase it across the road. Its sounds almost laughable now, but at the time is was terrifying with the guys leaning out both sides of the cars screaming "its a ->-bleeped-<-". The girls in the beauty therapist were very kind though, calming me down and ended up giving me a free facial.
JudithLynn