Because Athena was a goddess of war.
battle armor
Athena or Minerva is generally shown with golden armor and a spear. The armor is considered impenetrable and the spear is the symbol of her warlike powers.
Athena is often depicted wearing her helmet, carrying Aegis (Zeus' shield he shares only with her), and the spear, her signature weapon.
A helmet because she is the Greek goddess of battle strategy.
Because Athena was a goddess of war.
battle armor
She wore armor.
You need to wear a blue dress
A full length chiton.
She wore battle gear.
Athena or Minerva is generally shown with golden armor and a spear. The armor is considered impenetrable and the spear is the symbol of her warlike powers.
Athena is often depicted wearing her helmet, carrying Aegis (Zeus' shield he shares only with her), and the spear, her signature weapon.
A helmet because she is the Greek goddess of battle strategy.
Athena is always spoken of in myths as being fully clothed in armor, so I'm not sure were this question came from.
She wore battle gear, so a Spartan tunic, a helmet, and a shield.
She is often shown wearing a greek dress and a war helmet.