Piper Cub in summer - Shorts, T shirt, bare feet.
Chippy - either scruffy boiler suit with whatever you want underneath it, or old oily jeans and ditto sweater. In winter - long johns, thick socks, several jumpers, old Barbour jacket (there's no heater).
Cessna 150 - Grey slacks, short sleeve white shirt with gold wings logo and epaulets, tie, polished black shoes, naval blazer with flying club crest and gold wings embroidered onto front upper pocket, wings lapel badge. Aviator sunglasses.