Shorts and flip-flops.
best thing to do is to wear warm. you dont want to get sick.
the voyageurs wear a leather thing that can keep them very warm in the winter
Woollen clothes
Light fleece is great and flattering for light winter wear and use.
It would probably be best to wear rain boots. Wearing flip-flops, dress shoes, or open-toed shoes wouldn't be the best idea to wear. If it's winter you could wear winter boots if you spray them with waterproof spray.
Leotard.
I would wear blue jeans...
The best thing to wear to a church is something formal and appropriate
It depends on what the season or weather in like, spring you should wear lighter colors and in winter you should wear darker
They can wear rugs, New Zealand Rugs. But my horse doesnt wear anything! He was out in the field at -15 degrees last winter! He didnt feel a thing
Oil skins.
No, you are not required to wear a winter jacket during winter. It may be prudent to wear a heavier style jacket or other outer wear during the winter months if your location becomes cold, though.