OMG! Yes it happens to me and it really deflates my confidence. Last spring I was out and about feeling really good about myself. I pulled into a shopping center, got out of my car and headed to a store. Well I'm walking along, feeling great. Then all of a sudden I saw my reflection in the window of the store. I could believe how stupid I looked and I became extremely self conscience. I did go in the store and bought a small handbag. I did continue my shopping with a couple of more stops. All the time I was feeling less and less confident about myself.