Formal dress, i.e. the kind of clothes that real UN diplomat might be expected to wear when attending UN sessions, is required at all meetings. In order not to cause offence to other delegates, national dress, military uniforms and armbands are forbidden.
Specifically, we would ask male delegates to wear long sleeved dress shirts, slacks/trousers, and ties during the conference. Suits or blazers for male delegates would be preferable, but not mandatory.
We would ask female delegates to wear trousers/knee length skirts and modest dress shirts (no sleeveless or mid-drifts).
No sneakers/tennis shoes or denim for any delegates please.