Surprise drives progress because innovation depends on the sort of knowledge no one can gather in a central place.
Clothing creates the illusion that bodies fit an aesthetically pleasing norm. And that illusion depends on getting the fit right. Garments that bunch, pull, or sag call attention to figure flaws and often make people look worse than they would without clothes.
Glamour is a beautiful illusion - the word 'glamour' originally meant a literal magic spell - that promises to transcend ordinary life and make the ideal real. It depends on a special combination of mystery and grace. Too much information breaks the spell.