Ladies: Suggested options include skirts or dresses (no shorter than fingertip length), dress slacks, blouse or sweater. If you wear leggings you must wear a fingertip-length top. Wear comfortable, yet appropriate, shoes.
Gentlemen: Suggested options include a suit or dress slacks with belt, a collared shirt, sweater or sport coat with collared shirt. Ties are recommended but optional. Wear comfortable, yet appropriate, shoes.