Royal armor

Royal Armor is one of the accessories worn by the Prince and Princess of the Fire Nation. Both Azula and Zuko have been seen wearing Royal Armor.

The armor is very elaborate, with gold lines tracing across it. It is likely made of fine material only available to royalty and nobles. The armor is mostly black, with traces of red. It is worn over the chest of both the Prince and Princess, and extends across the shoulders and down to the top of the stomach. The armor signifies great power.

The armor is worn for public appearances, as Zuko and Azula were seen wearing the armor during ceremonies, war meetings, and audiences to the Fire Lord. Azula also wore the armor while battling Aang, Toph, and Sokka during the eclipse and while visiting the Boiling Rock. The armor is not usually worn when the Prince and Princesss are not out in public, likely due to the armor not being very comfortable.

It would seem that the armor may be used as a sign of accomplishment, as Azula and Zuko did not wear it until they successfully conquered Ba Sing Se. In Sozin's Comet, Part 3: Into The Inferno, it is also revealed that the armor can also be worn by the Fire Lord, as Azula was shown wearing the armor under her cape.

It can be assumed the armor will not be worn again until Zuko produces another child.