Jedi tunic, undertunic, tabard, and belt. I wonder if the tabard is necessary. My sister has a wide leather belt that has interesting shapes. It's brownish-red so I think she would need a lighter color under it.
Garment inspiration: An interesting, sleeveless cowl knit tube top one could wear with either end of the tube "up." It even has a halter-wear iteration. While labeled a DIY, it's just this series of s (Diy Ropa Patrones)