I do a lot of my fitness rides at night after work so usually I dress full summer kit for comfort. But if I am running errands around town or going to be stopping in stores and such, then usually just regular clothes. Shorts, polo shirt etc.
FWIW, I live near a high school so if I cruise past in full kit when the lil' bastards are around I usually get a chorus of "Loser! ho-mo! Dork!"
Not that I really care, just a little reminder of my station in life.