Answer:

Dress comfortably! Folk dancing is great exercise, and it is a good workout, and so do not overdress. Even in winter you do not want to wear a sweater, sweatshirt, or long sleeves. Women often enjoy dancing in a skirt, as skirts flow to the music. Broomstick skirts are common. T-shirts are common dress. Do not worry about what to wear there is no special costume, just be comfortable. You probably will get sweaty as you dance.