Yoda’s robes are another example of visual storytelling with a character’s costume. We’re introduced to Yoda as a concept by Obi-Wan Kenobi, who tells Luke to go find the powerful Jedi Master.
Lucas wanted to have "exotic" looking Jedi, not just human ones. Since the crew already had plentiful Twi'lek costumes and make-up (the race are frequent background characters) and a pre-existing ...
but to give her a new costume. "You're catching up with this character at a completely different stage in her life. She's full Ronin [a wandering Jedi], a traveling warrior finding where she can ...