Whenever you dance, be sure to wear clothing that allows easy movement and considers safety and other issues for both partners
Always wear dance shoes. This has nothing to do with the level of formality of the dance. Don’t wear sneakers or others shoes with rubbery soles – they can stick to the floor during turns and spins, which could cause ankle or knee injuries.
Sleeves are good. Avoid sleeveless shirts and strap dresses, especially for active dancing. Even your shoulders can get sweaty, and it is not pleasant to have to touch the damp skin of a partner.
Actually, only SOME sleeves are good. Sleeves that are baggy or cut low in the armpit are not a good idea, especially in Latin and swing dancing, because dancers need access to partner’s back, and hands may get caught in baggy sleeves.
Be selective with accessories. Big rings, watches, loose/long necklaces, and big belt buckles can be dangerous. They can catch in partner’s clothing, scratch and bruise.
Gentlemen: if you have no place to leave your keys and loose change, carry them in the left pocket of your trousers. This makes it less likely to bruise your partner.
Long hair should be put up or tied in a ponytail. Long flowing hair can get caught in the man’s right hand when trying to get into closed dance position. It’s also not fun to be hit in the face with flying hair during turns and spins. Even a ponytail with very long hair can swing around and smack your partner, so consider a bun or other style of updo.