Oh, absolutely I agree most women have a fine tuned instinct to be able to sex someone from a quick glance at their silhouette, regardless of how they dress or style their hair or wear make up. Whereas many men seem to clock breasts (whether real, implants or falsies), long hair, make up, skirt and instantly think woman. Whether they then revise that on closer observation or not. Which is why I think so many TW think they pass because they think they have ticked off these things and therefore must meet all the womanly criteria.
interestingly, DH’s position was that he observed an androgynous person in a photo and he couldn’t tell and when I explained skull shape, shoulder to hip ratio, hand size, gait, Adam’s Apple he was “oh, yeah”. I also described the jacket buttoning/unbuttoning behaviour DrU did when standing up and sitting down, which is classic man in a suit habits and not something women do. He looked less convinced but took it on board.