Members of the Panteer royal family wore variations on this long robe and tunic during the events of the Alderaan civil war in Star Wars: The Old Republic. This included Gaul, Katei, and Aurren Panteer.
Jedipedia has excellent 3D turn-arounds of these costumes.
Note: Because Aurren Panteer allied with the Sith Empire, he would not be eligible for Rebel Legion membership. However, Gaul, Katei, and generic Panteer nobility would.