Male actors usually wore a long tunic called a "chiton," which could be draped or belted in different ways to create different effects. They might also wear a cloak called a "himation" over the chiton. Additionally, male actors often wore high boots called "kothorni," which made them appear taller and more imposing on stage.
Female actors also wore chitons, but their chitons were typically longer and more flowing than those worn by men. They might also wear a veil or a headdress to indicate their gender.
For certain roles, actors might wear specific costumes. For example, tragic actors often wore masks with exaggerated facial expressions to convey their characters' emotions. Comic actors, on the other hand, might wear costumes that were more outlandish or ridiculous.
Overall, Greek actors wore costumes that were designed to enhance their performances and make their characters believable to the audience.